Sc Science tests - Highgate Wood Secondary · PDF fileScience tests Mark scheme for Papers 1...

2005

KEY STAGE

3LEVELS

3–7

Sc

2005

Science tests

Mark scheme forPapers 1 and 2

department for

education and skillscreating opportunity, releasing potential, achieving excellence

2

Introduction

The test papers will be marked by external markers. The markers will follow the mark

scheme in this booklet, which is provided here to inform teachers.

This booklet includes the mark scheme for paper 1 and paper 2 in both tiers.

The structure of the mark scheme for tiers 3–6 and 5–7

The mark scheme for each question shows:

■ the teaching points from the key stage 3 programme of study;

■ the marks available for each part of the question;

■ the total marks available for the question;

■ the answer or answers expected, indicated by an asterisk;

■ additional guidance to assist markers in making professional judgements.

When a question appears in an identical form in both tiers, the answers to the question

are given only once in the mark scheme. For clarity, both question numbers are given.

The following example, from tier 3–6 paper 1 question 11 and from tier 5–7 paper 1

question 3, illustrates this.

2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction

Tier Q No3–6 115–7 3

Part Mark Answer Accept Additional guidance

a 12/2e

‘the arm would not workproperly’ is insufficient

accept ‘you could not bendor straighten your arm’

accept ‘the biceps or musclewould not work properly’

any one from* the force of the muscle would

be less or lost* the (fore)arm or bone would

not move* the biceps or muscle could

not pull on the bone* the biceps or muscle would

have no effect* the biceps or muscle would

have less effect

Where more than one answer is acceptable, this is indicated in the mark scheme by

‘any one from’. Each possible correct answer is marked with an asterisk. In some cases,

alternative answers are indicated by ‘or’.

In the following example from part (d) of tier 5–7 paper 1 question 9, an answer

giving ‘no food’ and ‘the population is poisoned’ will be awarded two marks.

However an answer which gives ‘the population is poisoned’ and ‘pollution in the water’

will be given only one mark, as both points are correct answers for the same mark.

In the following example, from part (b) of tier 3–6 paper 2 question 12 and tier 5–7

question 5, the statement in bold type in the Additional guidance column is given in

order to indicate the general requirement of that part of the question.

In the Accept column there may be:

■ examples of answers which are acceptable, although they do not correspond exactly

to the expected answers;

■ some examples of higher level answers, which could be given by higher attaining

pupils answering questions on the lower levels in the tier.

In the Additional guidance column there may be:

■ answers which are not acceptable;

■ a reminder, in questions involving calculations, that consequential marking may

be used;

■ instructions on action in the event of consequential marking (see below);

■ guidance to markers where pupils have not followed the instructions on the question.


3


d 22/5d award marks for answers

which indicate sudden,serious changes inconditions

accept ‘more predators’accept ‘not enough food’accept ‘pollution in the water’accept ‘acid rain’

any two from* new predators* no food* the population is poisoned

* disease* the lake or pond dried up

or froze


b 11/1b

answers must include acomparisonaward a mark for an answer inthe past tense if a comparisonis included

accept ‘the finer the tablet thequicker it dissolves’

accept ‘the smaller the piecesthe faster it dissolves’

any one from* crushed tablets will dissolve

more quickly than wholetablets

* a whole tablet will takelonger to dissolve

* the bigger the surface orarea the faster it dissolves

4

Marking

The number of marks available for each part of a question and the maximum number of

marks for the question as a whole are shown on the question paper. Every part of a

question which has been attempted by a pupil will be marked and the mark for each part

recorded in the mark box alongside that part. Half marks will not be given in any question.

The total number of marks awarded for all the parts of questions on a double page will

be written in the box at the bottom of the right-hand page. In some instances, this will

be the sum of marks awarded for two questions. The total number of marks obtained on

the paper will be recorded on the front of the test paper.

The total number of marks available is 180 in tier 3–6 and 150 in tier 5–7.

Using professional judgement in marking

The instructions given in the mark scheme will enable the markers to decide whether

pupils have correctly answered a particular question. However, there will be instances

where an answer given by a pupil does not correspond to any of the possible responses

shown in the mark scheme. In such cases, markers will apply their professional

judgement to decide if credit should be given. They will consider whether the response:

■ is equivalent to those listed;

■ conveys the ideas underlying the question as outlined in the statement in bold type in

the mark scheme, if one is given.

If any doubt persists, markers will consult with their supervisors for guidance.

Marking misspellings of words

If a pupil misspells a word, markers will apply the following procedures:

■ if it is clear that the pupil has made a simple error, eg ‘tow’ for ‘two’ or ‘Son’ for

‘Sun’, then the incorrect spelling will be accepted and the mark awarded;

■ if a pupil misspells a word copied from the text of the question or from a selection

given, and the new word does not have any inappropriate meaning, the incorrect

spelling will be accepted and the mark awarded;

■ if specific scientific vocabulary is required in the answer, a creditworthy misspelling

must be a phonetic equivalent of the required word, with the major syllables of the

correct word represented in the answer.

Marking lists of alternative answers

In some instances, pupils give more than one answer to a single question. If any of the

answers given is incorrect, the mark will not be awarded, irrespective of the order in

which the answers are given. In some cases, a correct answer is given alongside other

answers which, while correct, would be insufficient for the mark. In these cases, the

mark will be given for the correct answer.


Marking questions containing calculations

Some questions require pupils to perform calculations. Where two marks are available,

they are advised to show their working. Pupils who do not show their working but give

the correct answer will be awarded full marks.

The result of one calculation may be required in order to carry out further calculations.

In such instances:

■ the term ‘consequential marking’ appears in the Additional guidance;

■ a pupil’s result for the first calculation is treated as the starting point for the second;

■ the pupil is awarded full credit for the second calculation if it is carried out correctly,

even if the result of the first calculation was wrong.

Marking answers given in the wrong place

In some cases, pupils may write correct answers in the wrong part of the question.

Markers will use professional judgement to decide whether a pupil has correctly

understood the question and simply written the answer in the wrong place. Similarly, if

pupils identify an answer by a cross or other indication when a tick is required, they will

be given credit for their responses.

In a planning question, if no answer is given in the expected place but the correct answer

is given in the drafting box, the mark(s) will be given.

Awarding levels

The sum of the marks gained on both papers determines the level awarded. A copy of

the level threshold tables which show the mark ranges for the award of different levels

will be sent to each school by the QCA in July 2005.

Schools will be notified of pupils’ results by means of a marksheet, which will be

returned to schools by the External Marking Agency with the pupils’ marked scripts.

The marksheet will include pupils’ scores on the test papers and the levels awarded.

The 2005 key stage 3 science tests and mark schemes were developed by the

University of Cambridge Local Examinations Syndicate and the Centre for Research

into Primary Science and Technology (CRIPSAT) on behalf of the QCA.


5

6


Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4

1 6 1 3 4

2 5 2 7

3 5 3 3 2 2

4 6 4 1 4

5 8 5 6

6 6 6 7

7 1 4 7 6

8 4 8 6

9 5 9 4

10 6 10 3 2

11 5 11 2 7

12 6 1 12 5

13 1 4 1 13 5

14 6 14 6

15 6 15 5

16 4 Total 25 20 22 23

Total 19 33 16 22

TotalP1 + 2 44 53 38 45 Overall

180

Mark Allocation Grid: Tier 3–6

TIER 3–6 Paper 1 TIER 3–6 Paper 2


7

Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4

1 5 1 6

2 6 2 4

3 5 3 3 2

4 6 1 4 2 7

5 1 4 1 5 5

6 6 6 5

7 6 7 6

8 4

4

8 5

9 1 9 5

10 1 4 10 5

11 5 11 5

12 5 12 5

13 5 13 5

14 5 14 5

Total 13 25 15 22 Total 22 16 20 17

TotalP1 + 2 35 41 35 39

150

Overall

The requirements of the Introduction to the Programme of Study apply across Sc1, Sc2, Sc3 and Sc4.

The Mark Allocation Grids on this pair of pages show the context of these questions in relation to Sc1, Sc2, Sc3 and Sc4.

Mark Allocation Grid: Tier 5–7

TIER 5–7 Paper 1 TIER 5–7 Paper 2

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

8

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

if all three lines are correct, award tw

o marks

if one or

two lines are correct, aw

ard one mark

if more than one line is draw

n from any anim

al,aw

ard no credit for that animal

*2

d2/4b

‘it has a tail’is insufficient

‘it has gills’or

‘it has gills to breathe or

to take inoxygen’are insufficient

accept ‘the tail helps it swim

’accept a description of stream

lining such as ‘it isnarrow

or

thin’accept ‘scales m

ake it smooth’o

r‘it is sm

ooth’

any on

efrom

* it has fins* it is stream

lined

1c

2/5c

* backbones1

b2/4b

accept ‘tadpole’accept ‘trout’o

r‘fish’

accept ‘trout’or

‘fish’accept ‘crocodile’o

r‘reptile’

any on

efrom

* A* B

any on

efrom

* B* D

11

a i2/5c

a ii2/4b

Q N

o1

Tier

3–6

frogreptiles

crocodilem

amm

als

water vole

amphibians

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

9

Q N

o2

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

if more than one box is ticked, aw

ard no mark

* C✓

1d

2/3d


ard no mark

* minerals

✓1

c2/3c


ard no mark

* no water

✓1

b2/3a

don

ot

accept‘Sun’

accept ‘sunlight’* light

* support

11

a i2/3a

a ii2/5b

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

10

Q N

o3

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

don

ot

accept‘caterpillars hibernate in winter’

accept ‘no leaves’or

‘no food’accept ‘it is too cold’accept ‘caterpillars change into pupae o

rchrysalises o

rm

oths’

* the tree loses its leaves1

c2/5b

accept ‘gypsy moth caterpillars ate the leaves’

accept ‘the gypsy moth caterpillars ate all the

leaves or

all the food’accept ‘no food’accept ‘they w

ere competing for food’

either

* decreased or

went dow

n any o

ne

from* few

er leaves to feed on* gypsy m

oth caterpillars ate most of the

leaves

* less food

or

any on

efrom

* increased or

went up

* stayed the same

any on

efrom

* they had enough food or

leaves* m

ore eggs hatched

1111

b2/5d

all three

answers are required for the m

ark


ard no mark

*oak tree

→caterpillar →

blackbird →ow

l

* It makes food by photosynthesis.

✓

11

a i2/5e

a ii2/3a

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

11

Q N

o4

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6


ard no mark

* iron nail and steel paper-clip✓

1d

3/1d

‘to insulate them’is insufficient as it is given in

thequestion

accept a named plastic

accept ‘to stop you being electrocuted’accept ‘to m

ake it safe’accept ‘to prevent them

short circuiting’accept ‘it does not conduct electricity’

any on

efrom

* plastic* rubber* P

VC

any on

efrom

* to stop you getting a shock

* so the wires do not touch

11

c i3/1d

c ii3/1d

BS

/2b

accept ‘iron’accept ‘steel’o

r‘clip’

any on

efrom

* nail* paper-clip

1b

3/3a

* metal

any on

efrom

* heat* therm

al energy

11a

3/1d

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

12

Q N

o5

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

‘she did not explain in detail’is insufficient answ

ers referring to her evaluation of herinvestigation o

rm

ethod are insufficient

‘she did not say what the results w

ere’isinsufficient

accept ‘it did not describe what she has found out’

accept ‘she has not given the pattern in herresults’accept ‘she did not say if changing thetem

perature affected the time’

accept ‘she did not say what the result show

ed’

any on

efrom

* it did not use her results* she did not describe the relationship betw

eentem

perature and dissolving

1d

1/2k

accept ‘as a control’* to m

ake the test fair1

c1/2d

‘measuring jug’is insufficient

accept ‘beaker’accept ‘scales’

any two

from* clock o

rtim

ero

rstopw

atch* therm

ometer o

rtem

perature sensor* m

easuring cylinder* balance

2b

1/2e

don

ot

accept‘heat’

award one m

ark for all three ro

ws

of information

recorded accurately in the tableaw

ard one mark for the tem

perature presented inascending

or

descending order

accept ‘temperature’

* temperature of w

ater

*

12

a i1/2i

a ii1/2i

5734

4074

20144

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

13

Q N

o5

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

8

the conclusion should refer to the independentand dependent variable

accept ‘the hottest dissolved quickest’accept the converseaccept ‘w

hen the water is cold it takes longer to

dissolve’accept ‘w

hen the water is hot it dissolves quickly’

accept ‘temperature does affect the tim

e todissolve’

any on

efrom

* the hotter the water the quicker it dissolves

* the higher the temperature the less tim

e is takenfor the cold cure to dissolve

1e

1/2k

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

14

Q N

o6

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

answers m

ust be in the correct orderaccept ‘lam

p’or

‘light’accept ‘cell’

accept ‘ ’for ‘

’

accept ‘ ’o

r‘

’

accept curved wires

* bulb* battery o

rcells

* switch

* a series circuit drawn w

ith the correct symbols

such as

1111

b i

4/1a

b ii

4/1a


ard no mark

accept ‘it reflects’accept ‘it bounces off’

*

✓

* it is reflected

11

a i4/3c

a ii4/3c

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

15

Q N

o7

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

accept ‘the magnets are attracting’

accept ‘the N and S

poles attract’accept ‘it w

ould not float’accept ‘it w

ould stick to the base’

any on

efrom

* it was attracted to the base

* it moved dow

n* it sank

1d

4/1d

accept ‘got smaller’

accept ‘moved closer’

* decreased1

c1/2j

accept ‘it would m

ove up and down’

* repel

* it moved upw

ards or

returned to its originalposition

11

b i

4/1d

b ii

4/1d

bo

thpoles are required for the m

arkSN

*1

a4/1d

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er On

e

16

Q N

o8

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

4

only give credit for a control variable which does

not conflict with the suggested investigation

accept ‘distance travelled’

any appropriate control variable such as* the object used* the angle of the slope* the surface used* the height of the ram

p* the length of the ram

p

1c

1/2d

a dependent variable (DV

) without an independent

variable (IV) can gain credit

don

ot

accepta m

easurement strategy if a D

Vis

not given or

is incorrect

accept ‘the time to reach a given point’

accept ‘angle or

height of ramp’

accept ‘speed’

accept ‘tape measure’

accept ‘clock’

any suitable dependent variable such as* the distance travelled* the tim

e to move dow

n the ramp

* the force needed to start the object moving

* the angle of the ramp at w

hich the object startsm

oving

any appropriate equipment to m

easure thedependent variable such as* ruler o

rm

etre rule* stopw

atch or

timer

or

light gates* new

ton meter

* protractor

11

b1/2d1/2e

accept specific variations in objects, such as,‘w

eight’or

‘mass’o

r‘surface area’o

r‘type of

trainer sole’or

‘type of shoe’

any suitable independent variable such as* the surface * the angle of the slope* the kind of object* the size of the push

1a

1/2d

markers sh

ou

ld read

the an

swers to

all parts b

efore m

arking

this q

uestio

n

the d

raft box sh

ou

ld b

e con

sulted

for clarificatio

n o

f any amb

igu

ity or o

missio

n

if an an

swer is co

rrect,ign

ore co

ntrad

ictory statem

ents w

ritten in

the d

raft box

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

17

Q N

o91

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5


ard no mark

* They feed on other living things and harm

them.✓

1d

2/5b

award a m

ark for any appropriate description ofsegm

ents such as ‘rings’or

‘lines’or

‘creases’‘they look sim

ilar’is insufficient‘sam

e texture’or

‘body shape’or

‘structure’areinsufficient

accept ‘its body is split into sections’* it has segm

ents1

c2/4b

accept ‘whether it contained arsenic o

rcopper’

accept ‘where the copper o

rarsenic is’

* the level of copper or

arsenico

rpollution

1b

2/5f

accept ‘from their food o

rfrom

blackbirds’

accept ‘it is passed on or

up’

accept ‘there are more yellow

earthworm

s’

any on

efrom

* blackbirds eat earthworm

s and sparrowhaw

kseat blackbirds

* it eats blackbirds which eat earthw

orms

* it is passed on through the food chain

any on

efrom

* they are more easily seen

* brown earthw

orms are better cam

ouflaged

11

a i2/5f

a ii2/5d

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

18

Q N

o102

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

don

ot

accept‘less air to the cells’

‘nothing can get through’is insufficient

accept ‘fat’accept ‘it is blocked’

accept ‘no oxygen’accept ‘no glucose’accept ‘it stops the circulation of blood’accept ‘blood cannot flow

through’accept ‘it stops blood getting to the heart’

accept ‘there is a build-up of carbon dioxide’accept for tw

o marks ‘they get less oxygenated

blood’

any on

efrom

* fat has been deposited* the artery has becom

e narrower

any two

from* less oxygen to the cells o

rheart m

uscle* less glucose to the cells o

rheart m

uscle* less blood to the cells o

rheart m

uscle

12

b i

2/2i

b ii

2/2l


n from any

substance,aw

ardno m

ark for that substance***

111

a2/2i

carbon monoxide

causes addiction tosm

oking

nicotine

causes influenza (flu)

causes lung cancer

tarcauses red blood cells to

carry less oxygen

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

19

Q N

o113

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

if more than tw

o boxes are ticked, deduct onem

ark for each incorrect tickm

inimum

mark zero

* C

* B and C

✓* D

and A✓

111

c i2/2ec ii

2/2e

don

ot

accept‘when one contracts the other

expands’‘they w

ork together’or

‘they do opposite things’is

insufficient

accept ‘one muscle m

oves the joint or

boneo

rarm

one way and the other m

uscle moves it the

other way’

any on

efrom

* when one contracts the other relaxes

* when the biceps contracts the forearm

is raisedand w

hen the triceps contracts the forearm is

lowered

1b

2/2e

‘the arm w

ould not work properly’is insufficient

accept ‘you could not bend or

straighten your arm

’

accept ‘the biceps or

muscle w

ould not work

properly’

any on

efrom

* the force of the muscle w

ould be less or

lost* the (fore)arm

or

bone would not m

ove

* the biceps or

muscle could not pull on the bone

* the biceps or

muscle w

ould have no effect

* the biceps or

muscle w

ould have less effect

1a

2/2e

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

20

Q N

o124

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

bo

ththe answ

er and the correct explanation arerequired for the m

ark

‘it changes temperature’is insufficient

accept ‘vapour or

steamo

rhot w

ater’for water

vapouraccept ‘it heats up’

accept ‘it makes condensation’

accept ‘it is liquid’accept ‘it changes state’accept ‘it turns to w

ater’accept ‘it cools’

* a temperature above 15 but below

100any o

ne

from* it is heated by the w

ater vapour

* thermal energy o

rheat is transferred from

the w

ater vapour

any on

efrom

* it condenses* it changes to a liquid

* its temperature falls

111

d i

4/5d

d ii

3/1h3/2c

accept a temperature from

99 to 101* 100

1c

3/1a

accept ‘distillate’* w

ater1

b3/1h


ard no mark

* evaporation then condensation ✓1

a3/1h

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

21

Q N

o124

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

7

accept ‘it cools the water vapour better o

rm

oreefficiently

or

quickly’accept ‘it w

ill work faster’

accept ‘it is cooled over a bigger length or

forlonger’accept ‘m

ore water is collected’

any on

efrom

* cold water replaces w

arm w

ater

* the water stays cold o

rcooler

* there is a bigger difference in temperature

between the w

ater vapour and the water

* some vapour escapes in B

1e

3/1h

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

22

Q N

o135

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

‘it damages the stone’is insufficient

‘it corrodes them’is insufficient

accept ‘they absorb light’

accept ‘it erodes them o

rw

ears away the building’

accept ‘it dissolves limestone o

rthe building’

* leaves are needed for photosynthesis or

form

aking food

any on

efrom

* it weathers lim

estone

* it reacts with the stone

11

c i2/3e

c ii3/2i3/3g


ard no mark

accept ‘it neutralises it’or

‘it neutralises some of

the acid’* it raises the pH

or

it

* calcium sulphate

✓

11

b i

3/3e3/3fb

ii3/3e

answers m

ay be in either orderb

oth


ark

accept ‘gas’accept ‘petrol’o

r‘diesel’

accept ‘sulphur oxide’or

‘sulphur trioxide’

any two

from* coal* peat* natural gas* oil

* sulphur dioxide

11

a i4/5a

a ii3/1e

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

23

Q N

o146

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

don

ot

accept‘the Sun’s heat cannot reach

planets that are far away’

‘the Sun is w

eaker’is insufficient

accept the converseaccept ‘the further aw

ay the colder it is’

accept ‘light’for energy

accept ‘the Sun’s rays are w

eaker or

not asstrong’

* a number greater than 2870 and sm

aller than5900

* the further away the low

er the temperature

any on

efrom

* planets further away receive less energy o

rheat

* energy from the S

un spreads out

* less heat reaches the planets that are furtheraw

ay

111

b i

1/2j4/4b

b ii

1/2j4/4b

b iii

4/5g

bo

ththe letter and the correct explanation are

required for the mark

allfou

rarrow

s are required for the mark

bo

ththe letter and the correct explanation are

required for the mark

accept ‘it is closer or

close’

accept ‘it is further or

far away’

accept ‘gravity is low o

rlow

er’

* Cit is the closest to the Sun

* an arrow from

each of the points A, B

, C and D

tow

ards the Sun

* Ait is furthest from the S

un or

the effect of theS

un’s gravity is weakest

111

a i4/4c

a ii4/4c

a iii4/4c

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

‘the test is unfair’is insufficientaccept a description of inaccuracies, such as‘she

counted the number of clips w

rongly’accept ‘som

ething wrong w

ith the tests’accept ‘she used different sized paper-clips’accept ‘the paper-clips w

ere already magnetised’

accept ‘she did something w

rong’

any on

efrom

* an inaccuracy in results* a problem

with the data o

rresults

* a problem w

ith the method

1b

1/2n

don

ot

accept‘the number of paper-clips’

accept ‘the coils’accept ‘the turns’

accept ‘the voltage or

power’

accept ‘the wire’

accept ‘the paper-clips’accept ‘position of the coil on the nail’accept ‘tightness of the coil’accept ‘distance betw

een turns’accept ‘the nail’

accept ‘number of paper-clips’

accept ‘count them’

accept ‘weigh them

’accept ‘the m

ore clips the stronger the magnet’

accept ‘measure the distance at w

hich a magnet

will just pick up a paper-clip’

* the number of turns o

rcoils of w

ire

any on

efrom

* the current* the length o

rthickness o

rm

aterial of the wire

or

coil* the circum

ference of the coil* the size of paper-clips

any on

efrom

* count the paper-clips picked up

* measure their m

ass

111

a i1/2d

a ii1/2d

a iii1/2e

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

24

Q N

o157

Tier

3–65–7

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

25

Q N

o157

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6


ard no mark

‘it will pick up a few

large paper-clips but a lot ofsm

all paper-clips’is insufficient

award

a mark fo

r a respo

nse id

entifyin

g th

atg

reater precisio

n is p

ossib

le with

smaller

increm

ents

‘they are smaller’is insufficient

accept ‘she would pick up differences betw

eenthe

number of turns of the coil’

accept ‘she might not see a change w

ith bigpaper-clips

or

she would see a change w

ithsm

aller paper-clips’accept ‘it is m

ore precise or

more sensitive’

*any on

efrom

* with bigger paper-clips she m

ight miss the

precise point at which the electrom

agnetstopped picking up paper-clips

* the smaller paper-clips m

ight help to identify theprecise point at w

hich the electromagnet

stopped picking up paper-clips

11

c i1/2g

c ii1/2e

✓

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er On

e

26

Q N

o168

Tier

3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

4

accept any arrow draw

n going up and to the right*

1c

4/2c

‘the forces are equal’is insufficient

accept ‘he floats’

accept ‘nothing’

accept ‘all the forces cancel out’accept ‘they cancel each other out’accept ‘the forces are balanced’

any on

efrom

* he will rem

ain stationary* he w

ill continue moving at a constant speed

any on

efrom

* there is no net force* the pairs of forces are equal

11

b4/2c

* A1

a4/2c

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

27

Q N

o9

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

award

marks fo

r answ

ers wh

ich in

dicate

sud

den

, seriou

s chan

ges in

con

ditio

ns

accept ‘more predators’

accept ‘not enough food’accept ‘pollution in the w

ater’accept ‘acid rain’

anytw

ofrom

* new predators

* no food* the population is poisoned

* disease* the lake o

rpond dried up o

rfroze

2d

2/5d

bo

ththe answ


ark‘they are steady’is insufficient

‘the line is straight’is insufficientaccept ‘the graph is flat’

* they are equal or

the same

anyo

ne

from* the graph is horizontal* the population does not change

1

c1/2j2/5d

bo

ththe answ


arkdo

no

taccept

‘they stop having offspring’or

‘theystop m

ultiplying’accept ‘the population begins to level off’

* Canyo

ne

from* the slope of the graph becom

es less steep* the grow

th of the population slows dow

n

1b1/2j

2/5d

bo

ththe answ


arkaccept ‘the graph is steepest’accept ‘the line is steeper’accept ‘it is very steep’

* Bthe graph increases most steeply

1a1/2j

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

28

Q N

o10

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5


ard no mark

‘they need to be digested or

broken down’is

insufficientaccept ‘so proteins o

rthey can be absorbed’

* amino acids

✓

anyo

ne

from* proteins cannot be absorbed* proteins are too big to pass through the lining of

the intestine or

blood vessels* am

ino acids can be absorbed* am

ino acids can pass through the wall of the

intestineo

rblood vessels

* amino acids are sm

all enough to be absorbed* to m

ake them soluble

11

d i

2/2bd

ii2/2c

don

ot

accept‘the enzym

e was killed’

* it or

the enzyme w

as destroyed or

denatured1

c

‘because the gelatin had been chopped up’isinsufficient

accept ‘the enzyme cam

e into contact with m

oreof the gelatin’accept ‘the surface o

rarea w

as bigger’

* there was a larger surface for the enzym

e to acton

1b

2/2b

anyo

ne

from* it is the tem

perature of the human body o

rthe

stomach

* the enzyme o

rpepsin w

orks best at thattem

perature

1a

1/2e

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

29

Q N

o11

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

bo

thansw

ers are required for the mark

don

ot

accept‘the sam

e number of m

olecules isthere’

‘the same am

ount of elements’is insufficient

accept ‘the ratio is always 1P

to 2Qs’

accept ‘the atoms o

rparticles have joined’

accept ‘the elements have joined’

accept ‘the same num

ber of atoms is present’

accept ‘the same particles o

rsam

e number of

particles are present’accept ‘there is the sam

e amount of each

element’

anyo

ne

from* a com

pound or

a new substance has been

formed

* R o

rthe product is a new

substance

*substance Q

:oxygen

*substance R

:carbon dioxide

* the same num

bers of each type of atom are

present

111

b i

3/1e

b ii

3/1e

b iii

3/2g

* B

* D

11

a i3/1ga ii3/1e

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

30

Q N

o12

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

units are not required in the tableignore

incorrectunits

accept a table in which the row

s rather than thecolum

ns are labelled accept ‘w

eight’for mass

accept

* any appropriate table in which the results can

berecorded such as

or

1b1/2i

award a m

ark for any suitable rigour in theprocedure

or

identification of any control variable‘the atm

osphere it is heated in’is insufficient

accept ‘whether the m

ass of metal increases o

rdecreases

or

stays the same’

accept ‘weight before and after burning’

accept ‘keep a lid on the crucible’accept ‘starting m

ass of metal’

accept ‘mass of the m

etal’accept ‘the sam

e crucible’accept ‘enough tim

e for the reaction to occur’accept ‘sufficient heat for burning to occur’accept ‘burn the m

etals for the same length of

time’

accept ‘mass w

ill increase’accept ‘w

eight increase’

* the metal

anyo

ne

from* the change in the m

ass of the contents of thecrucible after burning

* the change in the mass of the crucible and its

contents after burning

* make sure all the product is w

eighed

* an increase in the mass follow

ing burning for allthree m

etals

1111

a1/2a1/2d

1/2e

1/1c

change in mass

metal 1

metal 2

metal 3

metal

gaino

rloss

or

changein m

ass

metal

mass at

mass after

the startburning

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

31

Q N

o13

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

‘vibrations decrease’is insufficient

award one m

ark for a wave w

ith a smaller

amplitude

award one m

ark for a wave w

ith the same

frequencyaw

ard the marks for a w

ave with the correct

amplitude and frequency but w

hich is not centredon the m

iddle line of the grid or

which is not in

phase with the draw

n wave

the marks m

ay be awarded for a w

ave drawn on

Sylvia’s grid

accept ‘some of the sound is absorbed by the air’

accept ‘the amplitude decreases’

* the energy or

the sound is more spread out

*

12

b i

4/3j

b ii

4/3k

answers m

ust be in the correct orderall th

reeansw

ers in the correct order arerequired

for the mark

accept ‘light’accept ‘vibration’accept ‘sound’

accept1020

accept ‘’

accept ‘ 340

* Paul

James

Sylvia

* 3

11

a i4/3i

a ii4/2a

2005 KS

3 Science M

ark Schem

eTier 5–7 P

aper O

ne

32

Q N

o14

Tier5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

con

sequ

ential m

arking

app

liesaccept the answ

er to a iii+

0.2* 0.3

1b

unit not requiredthe m

ark for the unit may be aw

arded here if notgiven in part a ico

nseq

uen

tial markin

g ap

plies

con

sequ

ential m

arking

app

lies

accept ‘0.2 ×10’

accept ‘cmN

’accept ‘0.02 N

m’for both m

arks

accept ‘0.02 Nm

’accept ‘the sam

e’

accept the numerical answ

er to a i


er to a ii÷20


er to a i÷20 if a ii

has been omitted o

rif the answ

er given to a iiis

‘the same’

* 2* N

cm

* 2 (Ncm

)

* 0.1

1111

a i4/2f

a ii4/2f

a iii4/2f

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

33

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

7

the top of the bar must be in the m

iddle thirdbetw

een 10 and 15* a bar draw

n to 12 N/kg

any on

efrom

* Jupiter* S

aturn* N

eptune

* Jupiter

111

b i

1/2i

b ii

1/2k

b iii

1/2k

accept ‘Jupiter’

* A

* D

* E

* G

1111

a i4/4ba ii

4/4ba iii4/4ba iv4/4b

Q N

o1

Tier

3–6

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

34

Q N

o2

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

accept ‘it was heavier’

accept ‘it only weighed 130 at the end’

accept ‘there was m

ore food or

fuelor

supplies’accept ‘m

ore pressure’

any on

efrom

* it weighed m

ore * the m

ass was greater

* it weighed less at the end

1c

4/2g

accept ‘80 x 10’* 800

1b

4/2a


n from any one force

award no m

ark for that force***

111

a4/2b4/2c4/2d

the weight of thebuggy

A

the force pulling thebuggy along

B

the friction between

the skis and the snow

CD

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

35

Q N

o2

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

7

don

ot

accept‘there is more air resistance’

any on

efrom

* there is a bigger surface or

area* there is a bigger force* it catches m

ore air or

wind

1e

4/2c

‘they are bigger’is insufficient‘it can slide’is insufficient

accept ‘they do not sink into the snow’

accept ‘wheels sink’

accept ‘they reduce the pressure’accept ‘less friction’

any on

efrom

* they spread out the weight

* they have a bigger surface or

area* they can slide easily

1d

4/2g

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

36

Q N

o3

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

7

answers m

ust be in the correct order

accept ‘so you can see it’

accept ‘you cannot see a colourless liquid’accept ‘so you can read it’

any on

efrom

* so that alcohol can be seen* alcohol is difficult to see* you cannot easily see a colourless liquid* to m

ake it easier to read the thermom

eter

* gas* liquid

111

c i1/2f

c ii3/1a3/2c

don

ot

acceptnam

es of diseases do

no

taccept‘germ

s’accept a nam

ed non-viral pathogenicm

icro-organism such as ‘salm

onella’

any on

efrom

* bacteria* fungi* protozoa

1b

2/2n


ard no mark

accept ‘less chance of germs being passed on’

accept ‘might pass on disease’

accept ‘a child might bite o

rsw

allow the

thermom

eter’

* 35

* 37°C ✓

any on

efrom

* less chance of micro-organism

s being passed on

or

spread* glass could break

* mercury o

ralcoholo

rliquid could spill (if the

glass thermom

eter broke)* m

ercury is poisonous* you could choke

111

a i1/2ka ii

2/2na iii1/2e

BS

/2b

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

37

Q N

o4

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5


ard no mark

* neutralisation ✓1

c3/3e

accept ‘it fizzed’accept ‘bubbles’accept ‘effervescence’

any on

efrom

* blue* dark blue* purple

any on

efrom

* it bubbled* bubbles w

ere formed

11

b i

3/3d

b ii

1/2k

accept ‘fruit or

juice’

any on

efrom

* lemonade

* fruit juice

any on

efrom

* milk

* water

11

a i3/3d

a ii3/3d

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

38

Q N

o5

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

answers m


oth


ark

* 10

* Q

* P and

Q

111

c i1/2k3/2bc ii

1/2k3/2bc iii1/2j3/2b

accept ‘solid’

any on

efrom

* crystals* copper sulphate

1b

3/2c

accept ‘it changed colour’accept ‘it got darker’accept ‘there w

ere fewer crystals’

accept ‘some of the crystals o

rcopper sulphate

disappeared’

accept ‘use warm

water’

* the water o

rit w

ent blue

any on

efrom

* stir it* heat it* use hotter w

ater* grind up o

rcrush the crystals

11

a i3/2b

a ii3/2b

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

39

Q N

o6

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

7

accept ‘lemonade and jam

or

doughnut’

accept ‘cheeseburger and chips’or

‘burger andchips’

accept ‘it is bad for your heart’accept ‘it m

ight give you a stroke’

accept ‘it makes you fat’

accept ‘it is bad for the liver’

* Clare

* Nadia

any on

efrom

* it causes heart disease* it could give you a heart attack* it clogs your arteries o

rblood vessels

111

c i2/2ac ii

2/2a

c iii2/2a


ard no mark

* to provide energy ✓1

b2/2d

a mark should be aw

arded for ‘red or

white

blood cells’as knowledge of the function of blood

cells is not expected at this levelthe m

ark is awarded for the reference to blood

accept ‘plasma’

accept a named blood vessel

accept ‘arteries’accept ‘veins’

* D

* E

any on

efrom

* blood* blood vessels

111

a i2/2ba ii

2/2ba iii2/2c

2005 KS

3 Science M

ark Schem

eT

ier 3–6 Pap

er Two

40

Q N

o7

Tier

3–6

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

don

ot

accept‘it has a hump’

accept ‘too hairy’accept ‘different kind of fur’accept ‘the shape of the horns’accept ‘horns’accept ‘it has m

ore than two antlers’

accept ‘the head or

face is a different shape or

size’accept ‘the face looks different’

accept ‘bigger feet’or

‘different hooves’

any two

from* beard o

rhair under neck

* the shape of the antlers

* rounder nose

2d

1/2k

‘it looks like a fallow deer’o

r‘it is a fallow

deer’are insufficient

accept the converseaccept ‘the spots’accept ‘the things on its head are too w

ide’accept ‘the red deer is hairy’

any two

from* (adult) red deer does not have spots

* the shape of the antlers or

horns* the red deer has hair round its neck

2c

1/2k

‘an adult female has spots’is insufficient

accept ‘all deer have these things’accept ‘all young deer look the sam

e’accept ‘they all have spots o

rskinny legs’

accept ‘an adult fallow deer has spots’

* they all have these characteristics1

b1/2o

accept ‘the males have horns’

accept ‘it was bigger than others’

accept ‘it has a beard or

hair around the neck’

* a male has antlers

1a

1/2k

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

41

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

don

ot

accept‘can be used again’accept ‘it w

ill not run out’accept ‘it does not use fuel o

rm

ains electricity’accept ‘it is cheap’accept ‘no pollution w

ith a solar cell’

accept ‘it must be in the S

un to work’

accept ‘it is not sunny all the time’

advantage* the energy w

ill always be replaced

* it is renewable

* it is free to run* a battery m

ight leak

disadvantage* if the S

un goes in the pump w

ill stop* it w

ill not work at night o

rin the dark

11

b4/5a

answers m

ust be in the correct order

accept ‘movem

ent’

accept ‘gravitational’or

‘potential’accept ‘heat’for therm

al

accept for two m

arks ‘kinetic intosound’o

r‘kinetic

intotherm

al’

* electrical

* kinetic

* gravitational potential* kinetic o

rsound

or

thermal

1111

a i4/5ea ii

4/5ea iii4/5e

Q N

o81

Tier

3–65–7

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

42

Q N

o92

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

4

‘leave switch 3 o

r3 open’is insufficient

accept ‘close 4 and 5’accept ‘only leave 3 open’

any on

efrom

* close S4

and S5

* only leave S3

open

1b

4/1a4/1b

award a m

ark for each correct row

***

111

a4/1a4/1b

AB

CD

offoff

offoff

offoff

offoff

onon

onon

onon

offoff

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

43

Q N

o103

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

don

ot

accept‘it vibrates less’

accept ‘the height of the waves gets less’

accept ‘the waves get shorter o

rsm

aller’

accept ‘the waves are the sam

e distance apart’accept ‘there are four peaks o

rw

aves or

troughsbetw

een the lines’accept ‘the w

idth of each wave is the sam

e’accept ‘the lines are equally spaced’accept ‘the w

avelength is the same’

* the amplitude gets sm

aller

any on

efrom

* the peaks or

troughs are equally spaced

* the frequency is constant or

does not change

11

c i4/3j

c ii4/3k

accept ‘greater’* greater than

1b

3/1b

don

ot

accept‘they are close’do

no

taccept‘they m

ove faster’

accept at least three circles accept pairs of sim

ilar atoms

* five circles not touching and randomly arranged

* they are closer

11

a i3/1b

a ii3/1b

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

44

Q N

o114

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

‘to make it a fair test’is insufficient

accept ‘to neutralise the probe’or

‘so that it doesnot affect the other liquids’o

r‘to m

ake it pH 7’

accept ‘the first or

top one’

any on

efrom

* to clean the probe or

it* to prevent contam

ination* to get an accurate reading* so the liquids do not get m

ixed up* it is neutral

* alcohol

11

b i

1/2f

b ii

3/3d

award one m

ark for a correct tick for bo

thalcohol and distilled w

ateraw

ard one mark for a correct tick for b

oth

vinegar and sodium hydroxide solution

if more than one colum

n is ticked for any liquidaw

ard no mark for the corresponding pair of

liquids

*2

a3/3d

liqu

idacid

icn

eutral

alkaline

alcohol✔

dilute hydrochloric✔

acid

distilled water

✔

vinegar✔

sodium hydroxide

✔solution

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

45

Q N

o114

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

9

answers m

ay be in either order

don

ot

accept‘the magnesium

had dissolved’accept ‘there w

ere no reactants left’accept ‘one of the reactants has been used up’accept ‘the reaction w

as complete’

* magnesium

chloride +* hydrogen

any on

efrom

* the acid was used up

* the magnesium

was used up

111

d i

3/1f3/3e

d ii

3/3e

‘vinegar is a weak acid’is insufficient

accept the converseaccept ‘vinegar is a w

eaker acid’

accept ‘more bubbles’o

r‘m

ore fizzing’

accept ‘there would be a rise in tem

perature’or

‘the test-tube would get hot’

* hydrochloric acid has a lower pH

or

is more

acidic

any on

efrom

* more bubbles w

ould be given off* bubbles w

ould be given off more rapidly

* there would be a bigger rise in tem

perature

* the magnesium

would be used up m

ore quickly

11

c i3/3d

c ii1/2k

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

46

Q N

o125

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

accept a temperature from

38 to 44* 40

1e

1/2j

answ

ers mu

st inclu

de a co

mp

arison

‘at the lowest tem

perature it takes a long time to

dissolve’is insufficient‘at the highest tem

perature it dissolves quickly’isinsufficient

any on

efrom

* the higher the temperature the quicker the

tablet dissolves* the low

er the temperature the longer it takes to

dissolve

1d1/2j

accept ‘temperature’

* temperature of the w

ater1

c1/2d

answ

ers mu

st inclu

de a co

mp

arison

award a m

ark for an answer in the past tense if a

comparison is included

accept ‘the finer the tablet the quicker it dissolves’accept ‘the sm

aller the pieces the faster itdissolves’

any on

efrom

* crushed tablets will dissolve m

ore quickly thanw

hole tablets* a w

hole tablet will take longer to dissolve

* the bigger the surface or

area the faster itdissolves

1b

1/1b

don

ot

accept‘mass of tablet’

accept ‘size of tablet’accept ‘w

hether the tablet is whole o

rcrushed’

accept ‘form of the tablet’

accept ‘particle size’accept ‘m

ass of each piece’accept ‘num

ber of pieces’

any on

efrom

* size of pieces of tablet

* surface area of the tablet

1a

1/2d

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

47

Q N

o136

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

don

ot

accept‘it gets food from the blood’

accept ‘the mother provides food’

accept ‘it is fed through the umbilical cord’

any on

efrom

* food passes from the m

other to the embryo o

rbaby

* the embryo is fed through the placenta

* it gets food from the m

other’s blood

1d

2/2h

don

ot

accept‘to let waste out’

‘it stops infection getting in’is insufficient

accept ‘for respiration’

accept ‘it stops it drying out’accept ‘it stops m

icro-organisms o

rbacteria o

rviruses o

rgerm

s getting in’accept ‘to retain the contents’

any on

efrom

* to let oxygen or

air into the egg* to let carbon dioxide o

rw

aste gases out* to allow

gas exchange

any on

efrom

* for protection* to stop the egg drying out* it stops infection o

rdisease

11

c i2/2j

c ii2/5c

accept ‘to make fertilisation m

ore likely’

accept ‘some die’

accept ‘more tadpoles’

any on

efrom

* some eggs o

rsperm

might be eaten o

rlost

* eggs or

sperm are not protected inside the

body* to increase the chance of an egg being

fertilised * som

e eggs might not be fertilised

* some are w

ashed away

* some of the offspring m

ight be eaten

1b

2/2g


ard no mark

* oviduct ✔1

a2/2g

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

48

Q N

o147

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

6

‘to digest food’is insufficient


ard no mark

accept ‘for peristalsis’accept ‘m

echanical digestion’accept ‘to m

ix in enzymes’

accept ‘they digest them’

accept ‘they break them dow

n’accept ‘they turn it into am

ino acids’

any on

efrom

* to push food or

waste along

* to break up large pieces of food* to churn food

* they speed up digestion

* fibre ✔

111

b i

2/2c

b ii

2/2b

b iii

2/2a

‘it is the brain of the cell’is insufficient


ard no mark

accept ‘nuclei’accept ‘it contains genetic inform

ation’accept ‘contains chrom

osomes’

*nam

e:nucleus

*function:

it controls the cell

* tissue ✔

111

a i2/1b

a ii2/1a

2005 KS

3 Science M

ark Schem

eT

iers 3–6 and

5–7 Pap

er Two

49

Q N

o158

Tiers3–65–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

answ

ers mu

st refer to th

e collectio

n o

f data

rather th

an to

the p

resentatio

n o

f data

‘repeat the test’is insufficient but may be

accepted with additional m

easurements

accept an example of specific intervals such as

‘do it at intervals of 2°C’

accept ‘take more m

easurements’

accept ‘take a reading at 35°C’

any on

efrom

* use smaller intervals of m

easuring thetem

perature* use tem

peratures between 30°C

and 40°C

1d

1/2p

don

ot

accept‘between C

and D’

accept ‘A, B

, C and D

’

accept ‘between 10°C

and 40°C’

accept ‘10°C, 20°C

and 30°C’o

r‘10, 20, 30’

accept ‘between A

and B’o

r‘betw

een A and D

’o

r‘betw

een B and D

’

any on

efrom

* A, B

, C* the first three readings* betw

een 10°C and 30°C

* between A

and C

1c

1/2l

accept any reading consistent with the m

aximum

point on the drawn curve

* a smooth curve through all six points

* a temperature from

32 to 38

11

b i

1/2ib

ii1/2k

accept ‘time for the w

ater in the test-tube to heatup’accept ‘let it settle first’accept ‘the bubbles reach a steady pace’accept ‘to get rid of bubbles from

the liquid’accept ‘to get rid of trapped bubbles’

any on

efrom

* to make sure the w

ater in the boiling tube hadreached the required tem

perature * to m

ake sure the rate stabilised or

adjusted tothe new

temperature

1a

1/2e

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

50

Q N

o9

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

accept the converseaccept ‘copper has a low

er resistance’accept ‘iron o

rthe reed sw

itch has a greaterresistance’

any on

efrom

* steel stays magnetised

* iron loses its magnetism

* the switch w

ould stay closed * the sw

itch would not spring open

* copper is a better conductor than iron

11

b i

4/1f

b ii

4/1b

don

ot

accept‘move it closer’

all fou

rpoles m

ust be correct for the mark

accept ‘put coils or

turns closer together’accept ‘increase the num

ber of cells or

batteries’accept ‘increase the voltage o

rpow

er’

* add more coils o

rturns

* increase the current

*

111

a i4/1f

a ii4/1f

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

51

Q N

o10

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

accept a tolerance of one small square

* an answer consistent w

ith the drawn curve

1b

1/2k

pu

pils can

gain

credit fo

r correct resp

on

sesto

oth

er parts if th

e axes are wro

ng

ly labelled

bo

thansw

ers are required for the mark

units are required for the mark

at least one zero must be included at the origin

* X-axis:

time (m

inutes) Y-axis:

temperature (°C

)* appropriate scales such as 2 cm

represents10°C

, 2 cm represents 1 m

inute* 11 points plotted to w

ithin half a small square

* a smooth curve of best fit (not dot-to-dot)

1111

a1/2i

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

52

Q N

o11

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

parts c i an

d c ii sh

ou

ld b

e marked

tog

ether

don

ot

accept‘test the other metals w

ith zinc tosee if they react’

accept ‘add zinc to copper chloride and if it reactsadd it to a solution of a salt of the next m

etal upand so on’accept ‘add the other m

etals to zinc chloride’accept any nam

ed zinc salt

accept ‘whatever zinc displaced should be below

zinc’

accept ‘put zinc below all the m

etals that react’

any on

efrom

* add zinc to a solution of a salt of each of theother m

etals

* add each of the other metals to a solution of a

zinc salt

any on

efrom

* place zinc between the m

etal in the salt which

does react and the metal in the salt w

hich doesnot react

* place zinc between the m

etal which does react

and the metal w

hich does not react

11

c i3/3c

c ii3/3c

bo

ththe answ

er and the correct reason arerequired for each m

ark

accept ‘iron is lessreactive’o

rthe

converseaccept ‘m

agnesium is

more reactive’o

rthe

converse

**

11

b3/3b3/3c

accept ‘magnesium

has taken the sulphate’

accept ‘copper and magnesium

change places’

* magnesium

displaces copper from the copper

sulphate* copper is replaced by m

agnesium

1a

3/3b

Do

es a p

airs of

disp

lacemen

tch

emicals

reaction

take place?

reason

yes or n

o

iron + sodium

iron is below sodium

(in the chloride

noreactivity series) o

rsodium

is above iron (in the reactivity series)

magnesium

+

magnesium

is above lead (in the lead nitrate

yesreactivity series) o

rlead is below

m

agnesium (in the reactivity series)

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

53

Q N

o12

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

answers m


oth

the name and form

ula are required for eachm

arkaccept ‘carbon m

onoxide’accept ‘C

O’

* carbon dioxideC

O2

* water

H2 O

11

c3/1f

accept ‘convection’* diffusion

1b

3/1b

the change and the explanation should bem

arkedtogether

bo

ththe answ

er and the reason are required foreach m

ark

don

ot

accept‘the cells break down’

accept ‘it turned red or

yellow o

rorange’

accept any suitable colour for a ripe apple

accept ‘because pectin breaks down’o

r‘the cells

are not held together’

any two

from* they change colour o

rturn less green

because chlorophyll breaks down

* they become sw

eeter because glucose is form

ed

* they become softer

because cells break apart without pectin

2a

3/2h

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

54

Q N

o13

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

answers m

ust refer either to respiration or

maggots

and

photosynthesis or leaves

‘the concentration of carbon dioxide remains

unchanged’is insufficient

any on

efrom

* carbon dioxide produced by respiration was

used up in photosynthesis* carbon dioxide produced by the m

aggots is used in photosynthesis

* carbon dioxide produced by the maggots w

as used by the leaves

1c

2/3a2/3e

‘carbon dioxide is absorbed’is insufficientdo

no

taccept‘the carbon dioxide reacts w

ithw

ater in the tube’accept ‘the carbon dioxide reacts w

ith water’

* photosynthesis

any on

efrom

* carbon dioxide is used up* carbon dioxide reacts w

ith water in the plant

11

b i

2/3ab

ii2/3a

accept ‘maggots breathe out carbon dioxide’

* respiration

* carbon dioxide is produced

11

a i2/2ja ii2/2j

2005 KS

3 Science M

ark Schem

eT

ier 5–7 Pap

er Two

55

Q N

o14

Tier

5–7

Part

Mark

An

swer

Accep

tA

dd

ition

al gu

idan

ce

Total

5

accept ‘no mention of treatm

ent’

accept ‘it does not tell you’

accept ‘data shows 1 in 5 had signs of heart

disease’

any on

efrom

* nodata refers only to older w

omen

* noif you include all w

omen the rate could be up o

rdow

nany o

ne

from* no

no evidence of the impact of treatm

ent* no

previous research could have underestimated

the proportion* yes

data suggests only 1 in 5 showed signs of heart

disease so 4 out of 5 are unlikely to suffer

111

c1/1a1/2k1/2o

accept ‘they used 4286 wom

en’* they used a large sam

ple1

b1/2h

accept ‘it is only one country’accept ‘diet differences elsew

here’accept ‘stress m

ay be different elsewhere’

accept ‘different lifestyles elsewhere’

accept ‘they have only investigated wom

en in the60 to 79 age group’

* they have only investigated British w

omen

1a

1/2k

EARLY YEARS

NATIONALCURRICULUM5–16

GCSE

GNVQ

GCE A LEVEL

NVQ

OTHERVOCATIONALQUALIFICATIONS

265363

First published in 2005

© Qualifications and Curriculum Authority 2005

Reproduction, storage, adaptation or translation, in any form or by any means, of this

publication is prohibited without prior written permission of the publisher, unless

within the terms of licences issued by the Copyright Licensing Agency. Excerpts may

be reproduced for the purpose of research, private study, criticism or review, or by

educational institutions solely for educational purposes, without permission, provided

full acknowledgement is given.

Produced in Great Britain by the Qualifications and Curriculum Authority under the

authority and superintendence of the Controller of Her Majesty’s Stationery Office and

Queen’s Printer of Acts of Parliament.

The Qualifications and Curriculum Authority is an exempt charity under Schedule 2 of

the Charities Act 1993.

Qualifications and Curriculum Authority

83 Piccadilly

London

W1J 8QA

www.qca.org.uk/

Further teacher packs may be purchased (for any purpose other than statutoryassessment) by contacting:QCA Publications, PO Box 29, Norwich NR3 1GN

(tel: 08700 60 60 15; fax: 08700 60 60 17)

Email: [email protected]

Order ref: QCA/05/1425

Sc Science tests - Highgate Wood Secondary · PDF fileScience tests Mark scheme for Papers 1...

Documents

Transcript of Sc Science tests - Highgate Wood Secondary · PDF fileScience tests Mark scheme for Papers 1...