Globe Academy Science Department

GCSE Additional Science

Homework Booklet Summer 1

Contents:

Topic Date

Set

Date

Due

Feedback/

Marking

1 Alpha Particles

and the

Scattering

Experiment

2 Atomic Physics,

Fission and

Fusion

Revision

Checklists

3 Biology Revision

Questions

4 Chemistry

Revision

Questions

5 Physics Revision

Questions

Look after this booklet. You will need to pay for a replacement.

Name: ______________________________________

Important Message for Parents and Carers

Dear Parents and Carers,

The teachers of Globe Academy believe that Home Learning is an integral part of developing

every student and ensuring that they reach their academic potential.

Home Learning is important because it is point where school and home come together. It serves

as a window through which you can observe your children’s education and express positive

attitudes towards your children about their education and progress. As children grow older,

homework and the amount of time engaged in homework, increases in importance. For Globe

Academy staff, homework is an opportunity to provide additional academic instruction and further

extend your child’s learning.

The benefits of Home Learning for you and your child are as follows:

(1) Practice and participation in home learning tasks can improve your child’s achievement.

(2) When homework is completed accurately and to a good standard, not only will your child’s

general knowledge and grades improve but your child will also increase their mastery of

basic academic skills, such as reading, writing, spelling and mathematics, something

Globe Academy is committed to.

(3) Your child’s ability to bring an assignment home, gather and organise necessary materials

to complete the assignment, return the assignment and receive a level/grade, strengthens

his or her sense of personal responsibility for their learning.

(4) Time management skills are learned and developed.

(5) Further, when homework proceeds smoothly it can become (4) a positive aspect of your

relationship with your child.

(6) Home Learning offers schools an opportunity to let parents know what their children are

learning and keeps parents informed about work being studied and completed in class

time.

(7) Home Learning helps the Academy achieve their overall mission of improving your child’s

achievement.

(8) Homework is the bridge that joins schools and parents. For parents there is the potential

to gain a greater appreciation of your child’s education and achievement.

For these valid reasons we are asking that parents/carers work with us to ensure that your child

completes their homework.

Your child will receive a homework booklet for each subject and we ask that all parents/carers

ensure that the tasks in this booklet are completed on time and to a high standard. Together we

can improve your child’s progress and attainment.

Please sign below to confirm your agreement to support Globe Academy by checking and

ensuring your child completes their Home Learning Tasks each week. In addition please sign and

comment if necessary, the Homework Record sheets also in this booklet.

Thank you in advance for your support. Do not hesitate to contact me with any queries or

comments about Home Learning at Globe Academy.

Kind Regards

Ms. C. Fernandes

(Vice Principal)

Name of Student: ______________________________________________________

Learning Family: ______________________________________________________

Name of Parent/Carer: __________________________________________________

I agree to ensure that my child completes all the Home Learning Tasks in this booklet on time

and to a high standard.

Signature of Parent/Carer: _______________________________________________________

Date: ____________________________

Home Learning Record

After completing each Home Learning task please complete the record boxes below.

Task Details:

Student signature/comment:

Deadline date:

Parent signature/comment:

Date completed:

Teacher signature/comment:

Task Details:

Student signature/comment:

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Date completed:

Teacher signature/comment:

Home Learning Record

After completing each Home Learning task please complete the record boxes below.

Task Details:

Student signature/comment:

Deadline date:

Parent signature/comment:

Date completed:

Teacher signature/comment:

Task Details:

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Home Learning Record

After completing each Home Learning task please complete the record boxes below.

Task Details:

Student signature/comment:

Deadline date:

Parent signature/comment:

Date completed:

Teacher signature/comment:

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Homework 1: Alpha Particles

Around 400 BC the Greek philosopher Democritus theorised that matter could not be

divided indefinitely. Since then, scientists have adapted this theory, through Dalton‟s

“Billiard Ball” and Thompson‟s “Plum Pudding” models, to the nuclear model proposed by

Rutherford.

To get

grade

You should have:

C Drawn a labelled diagram to show how the experiment was conducted.

Stated how they knew where the alpha particles were hitting the screen.

Explained why most of the alpha particles went straight through the gold foil.

Explained why some of the alpha particles were deflected.

Stated Rutherford‟s conclusion about the structure of the atom.

B As Grade C plus:

Explained why some of the alpha particles appeared to rebound.

Drawn the paths taken by the alpha particles that went straight through, were

deflected, and were „rebounded.‟

Explained how Rutherford concluded the charge on the nucleus.

Explained how Rutherford concluded the structure of the atom.

A As Grade B plus:

Explained how the kinetic energy of the alpha particles affected the angle of

deflection.

Explained what results the scientists were expecting to get if the “Plum Pudding”

model of the atom was correct.

Task: Write a newspaper article about the alpha scatting

experiment conducted by Geiger and Marsden. Your

article should explain how the experiment was

conducted, what results were obtained, and how the

results were interpreted by Ernest Rutherford.

Key words: Alpha particle, gold foil, deflected, empty space, repel,

positively charged, undeflected, nucleus

Grade ladder: What is your target grade? Use the grade ladder to help you reach it:

Alpha

Source

Gold Foil Undeflected

Particles

Deflected

Particles

Answer page for Homework 1:

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Independent Learning: Scientists often use computer simulations. Check out the alpha particle experiment one at: http://phet.colorado.edu/en/simulation/rutherford-scattering

DIAGRAM:

Homework 2: Atomic Physics, Fission and Fusion

Complete a total of 12 marks from the grid. Push yourself to try the hardest questions you

can!

1 mark questions 2 mark

questions

3-4 mark questions 6 mark

questions What is a beta

particle?

Explain how

fusion reactions

can lead to a

chain reaction.

The early Universe contained only atoms

of hydrogen. The Universe now contains

atoms of over one hundred different

elements.Explain how the different

elements now contained in the Universe

were formed. (3 marks)

A star goes

through a

lifecycle.

Describe the

lifecycle of a star

like the Sun.

What is the name of

the process shown in

this diagram?

Explain what is

meant by

nuclear fission.

When an atom of thorium-232 decays,

an alpha (α) particle is emitted from the

nucleus. An atom of radium is left

behind.An alpha particle consists of two

protons and two neutrons. We can

represent this radioactive decay in a

special kind of equation:

Thorium-228 is also radioactive. Atoms of

this isotope also decay by emitting an

alpha particle and producing an

isotope of radium. Complete the

equation for this decay.

(4 marks)

Compare and

contrast nuclear

fission and

nuclear fusion.

What is the name given

to radiation that is

around us all the time?

In a star, nuclei

of atom X join to

form nuclei of

atom Y.

Complete the

sentences.

The process by

which nuclei join

to form a larger

nucleus is called

nuclear

........................... .

This is the

process by

which a star

releases

.......................... .

Nuclear fusion is the process by which

energy is released in stars.

Which one of the following can be

concluded from the data in the table?

Draw a ring around the correct answer in

the box to complete the sentence.

The rate of nuclear fusion in a large star is

faster than

the same as

slower than

in a small star.

Explain the reason for your answer.

(3 marks)

Explain how a

nuclear fusion

power station

and reactor

works.

Answer page for Homework 2:

Question

Number

Answer

Independent Learning: You must start revising. Use your exercise book,

revision guide and revision websites to start making revision notes. Use

your revision pack to complete exam questions too.

REVISION CHECKLISTS: Here are the topics you need to revise from Biology, Chemistry and

Physics. BIOLOGY CHEMISTRY PHYSICS

Cells and cell

structure (animals,

plant, yeast and

bacteria cells,

diffusion,

organs/tissues of a

human and plant)

Photosynthesis

(word equation,

limiting factor

graphs, uses of

glucose)

Organisms and

their environments

(factors affecting

distribution and

ways of measuring

distribution of

animals/plants)

Proteins and

enzymes (digestive

enzymes, how

enzymes work,

uses of enzymes in

the home and

industry)

Respiration

(aerobic and

anaerobic)

Genes and

inheritance

(mitosis and

meiosis, stem cell

research, genetic

diagrams, genetic

diseases)

Fossils, speciation

and extinction

Ionic, covalent

and metallic

bonding

Structures of

simple covalent,

giant covalent,

ionic substances,

alloys,

nanomaterials,

polymers.

Chemical

calculations

Factors affecting

rates of reaction

Exothermic,

endothermic and

reversible

reactions

Acids, bases and

making salts

Electrolysis

Forces,

acceleration,

velocity and

terminal velocity

Energy (power, KE,

GPE, momentum

and car safety)

Electrical circuits

(static electricity,

current, p.d., LDRs

thermistors and

parallel circuits)

Plugs, fuses and

RCCB

Alpha, beta and

gamma radiation,

half-life and uses

of radiation

Nuclear fission,

fusion and life

cycles of stars

Homework 3: Biology Revision

Complete the data analysis exam questions from the Organisms

and Their Environment topic.

GRADE C:

The chart shows the flowering times of several species of plants and when leaves are present.

(a) Which plant flowers earliest in the year?

......................................................................................................................................................................... [1]

(b) Which plant has two flowering seasons?

......................................................................................................................................................................... [1]

(c) Which plant flowers for the longest time?

......................................................................................................................................................................... [1]

(d) Which plants produces flowers before leaves?

......................................................................................................................................................................... [1]

(e) Which plant is in leaf for the longest time?

........................................................................................................................................................................ .[1]

(f) Species D grows in woodland. Explain why it produces leaves in February.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

TOTAL / 7

Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec

A

B

C

D

E

F

G

In flower

Leaves present

Sewage

water High

Low

Relative

number

oxygen

fish

bacteria

0 2 4 6 8 10 12

Distance downstream

GRADE B:The graph shows the effect of different concentrations of fertiliser on the yield of 4 varieties of rice,

A, B, C and D.

(a) Which variety gave the highest yield with no fertiliser?

......................................................................................................................................................................... [1]

(b) Describe the effect of increasing the concentration of fertiliser on the yield from variety A.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(c) What is the effect on variety D of increasing the concentration of fertiliser from 60 to 80 kg/hectare?

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(d) What is the difference in yield between varieties A and D when 100kg/hectare of fertiliser is applied?

Show your working.

Answer ................................................. [2]

TOTAL / 7

GRADE A: The graph shows the effect of sewage entering a river on the oxygen level and the relative numbers of bacteria and

fish.

(a) How are the bacteria affected by the sewage entering the river?

......................................................................................................................................................................... [1]

(b) (i) How are the fish affected by the sewage entering the river?

......................................................................................................................................................................... [1]

(ii) What is the reason for this change?

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(c) As the distance downstream increases the concentration of

sewage falls.

Suggest two reasons for this.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

5.0

4.0 3.5 3.0 2.5 2.0 1.5

4.5

0 20 40 60 80 100 120 140

Concentration of fertiliser/ kg per hectare

tonnes per hectare Yield/

A

B

D

C

Homework 4: Chemistry Revision Complete the exam questions from the Structures topic.

GRADE C:

The diagrams below show the structures of ethanol, mica and diamond.

(a) How many bonds does each carbon have in:

(i) ethanol? [1]

(ii) diamond?[1]

(b) How many bonds does each hydrogen have in ethanol? [1]

(c) (i) How many bonds does each silicon have in mica? [1]

(ii) How many bonds does each oxygen have in mica? [1]

GRADE B: Carbon is known to exist as two different allotropes.

The allotropes are known as diamond and graphite.

Both diamond and graphite consist of carbon atoms bonded together in three-dimensional structures.

(a) What is the name given the type of bond in which electrons are shared?

......................................................................................................................................................................... [1]

(b) (i) Diamond is one of the hardest substances known to man and is used on the edges of glass cutting tools.

Explain why the structure of diamond makes it so hard.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(ii) Graphite is soft and slippery and is used to lubricate surfaces.

Explain why the structure of graphite makes it soft and slippery.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(c) Diamond is an electrical insulator, but graphite conducts electricity.

Explain why graphite conducts electricity.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

Carbon atoms

Carbon

atoms

H

H H

C C O

H H

H O

O Si

O

O

O

O Si

O

O

O Si

O

O

O Si O

O

O Si

O

O Si

Mica Ethanol Diamond

GRADE A:

The following table shows some of the ions found in natural waters.

ion Mg2+

Na+

SO42-

NO3-

Ca2+

C1-

K+

name magnesium sodium sulphate nitrate calcium chloride potassium

(a) Use the list of ions to work out the formulae of the following compounds:

(Explain your answers)

(i) sodium sulphate

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(ii) potassium nitrate

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(iii) calcium chloride

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(iv) magnesium nitrate

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(v) potassium chloride

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(b) (i) What type of bonding occurs in all of these compounds?

......................................................................................................................................................................... [1]

(ii) Explain how this type of bonding occurs.

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

(c) (i) Iodine is in the same group of the Periodic Table as chlorine.

What is the formula of an iodide ion?

......................................................................................................................................................................... [1]

(ii) Strontium, Sr, is in the same group of the Periodic Table as magnesium.

What is the formula of the strontium ion?

......................................................................................................................................................................... [1]

(iii) What is the formula of strontium iodide?

......................................................................................................................................................................... [1]

Homework 5: Physics Revision

GRADE C:

Bungee jumping is a very popular sport in New Zealand. People jump of high bridges with elastic cord tied to their

feet. The diagram shows three stages of a bungee jump.

(a) Name the force that pulls the jumper down.

......................................................................................................................................................................... [1]

(b) State the size of this force throughout the jump.

Choose from:- Increases decreases stays the same.

......................................................................................................................................................................... [1]

At only some stages of the bungee jump there is a tension force in the elastic cord.

(c) For each of the three questions you should describe whether the gravity and tension forces are balanced

or unbalanced.

Cross out the wrong answer.

(i) At the start the forces are balanced/unbalanced. [1]

(ii) When bouncing upwards the forces are balanced/ unbalanced. [1]

(iii) When stationary at the end the forces are balanced/ unbalanced. [1]

(d) Apart from making the object stay still describe one other effect balanced forces can have on an object.

......................................................................................................................................................................... [1]

(e) Describe the motion of the bungee jumper in stages 1 and 2. For each stage state in which direction

the resultant force acts.

..............................................................................................................................................................................

..............................................................................................................................................................................

..............................................................................................................................................................................

......................................................................................................................................................................... [4]

3. End

(stationary)

1. Start

(moving

down)

2. Bouncing

back up

GRADE B:

A car moves along a dry road.

The driver sees danger ahead. It takes her 0.6s to react before braking. This is

called her reaction time. In this time the car travels 15m.

(a) Calculate the speed of the car during the 0.6s it takes the driver to react to the danger ahead.

..............................................................................................................................................................................

..............................................................................................................................................................................

......................................................................................................................................................................... [3]

(b) The distance travelled before braking is the thinking distance.

Total stopping distance for the car = thinking distance + braking distance

The total stopping distance at this speed is 63m. What is the braking distance of the car?

......................................................................................................................................................................... [1]

(c) (i) What effect does driving on a wet road have on the driver's reaction time?

......................................................................................................................................................................... [1]

(ii) What other two factors besides speed affects the braking distance of a car?

..............................................................................................................................................................................

......................................................................................................................................................................... [2]

GRADE A: A child steps out in the path of a car in a busy street.

The graph shows how the speed of the car changes from the moment the driver sees the child until the car safely

stopped before the child was harmed.

(a) What is the driver's reaction time in seconds?

......................................................................................................................................................................... [1]

(b) Calculate the deceleration of the car while the brakes are being applied.

..............................................................................................................................................................................

......................................................................................................................................................................... [3]

(c) Calculate the distance travelled by the car from the moment the driver saw the child.

..............................................................................................................................................................................

..............................................................................................................................................................................

......................................................................................................................................................................... [6]

0

27 m/s

speed m/s

1.2s 5.4s

time/s