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Cambridge International Examinations Cambridge Primary Checkpoint
SCIENCE 0846/01
Paper 1 October 2017
MARK SCHEME
Maximum Mark: 50
Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the details of the discussions that took place at an Markers’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the End of Series Report. Cambridge will not enter into discussions about these mark schemes.
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2 of
13
Ann
otat
ions
and
abb
revi
atio
ns
/ OR
alte
rnat
e re
spon
ses
for
the
sam
e m
arki
ng p
oint
(
) th
e w
ords
or
units
in b
rack
ets
do n
ot n
eed
to n
ot n
eed
to b
e st
ated
A
ccep
t an
acc
epta
ble
resp
onse
D
o n
ot
acce
pt
indi
cate
s an
inco
rrec
t re
spon
se th
at w
ould
con
trad
ict
anot
her
othe
rwis
e co
rrec
t alte
rnat
ive
Ign
ore
indi
cate
s an
irre
leva
nt a
nsw
er th
at is
not
cre
ditw
orth
y, h
owev
er,
full
mar
ks c
an s
till b
e ac
hiev
ed e
ven
with
the
answ
ers
that
are
igno
red
ecf e
rror
car
ried
forw
ard,
mar
ks a
re a
war
ded
if an
inco
rrec
t res
pons
e ha
s be
en c
arrie
d fo
rwar
d fr
om e
arlie
r w
orki
ng, p
rovi
ded
the
subs
eque
nt
wor
king
is c
orre
ct
ora
or r
ever
se a
rgum
ent
0846
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ckpo
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k S
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017
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13
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
1
pla
nt
/ pro
du
cer
Su
n /
ligh
t / s
un
ligh
t
2Ig
no
re n
amed
pla
nts
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
2
For
ce is
mea
sure
d in
new
ton
s.
M
ass
is m
easu
red
in k
ilog
ram
s.
2A
ccep
t N
D
o n
ot
acce
pt
n A
ccep
t an
y su
itabl
e m
easu
rem
ent o
f mas
s e.
g.
gram
s, k
g, g
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
3
iron
stee
l
2A
ccep
t ni
ckel
and
cob
alt
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
4
long
nec
k / l
ong
legs
to
rea
ch f
ood
/ to
rea
ch l
eave
s /
to r
each
the
top
of
the
tree
2ea
ch c
orre
ct a
nsw
er =
1 m
ark
Ign
ore
oth
er fe
atur
es e
.g. c
amou
flage
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ckpo
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
5
germ
inat
ion
polli
natio
n
fert
ilisa
tion
seed
pro
duct
ion
2fo
ur
corr
ect =
2 m
arks
tw
o o
r th
ree
corr
ect =
1 m
ark
on
e co
rrec
t = 0
mar
ks
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
6(a)
sub
stan
ce
stat
e at
–1
0°C
st
ate
at
50
°C
stat
e at
15
0°C
wat
er
solid
liq
uid
gas
salt
solid
so
lid
so
lid
wax
so
lid
liqui
d liq
uid
oxyg
en
gas
gas
gas
nitr
ogen
g
as
gas
gas
3ea
ch c
orre
ct a
nsw
er =
1 m
ark
Acc
ept
stea
m /
wat
er v
apou
r A
ccep
t ni
trog
en v
apou
r
6(b
)
0 1
unit
no
t ne
eded
6(c)
free
zing
1
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
7(a)
Jupi
ter
Mar
s
Nep
tune
Sat
urn
Ura
nus
1m
ore
than
one
ans
wer
circ
led
= 0
mar
ks
7(b
)
0 1
2 3
4
1m
ore
than
one
ans
wer
circ
led
= 0
mar
ks
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
8(a)
long
er /
deep
er (
into
soi
l) / m
ore
bran
ches
1
Ign
ore
just
gro
ws
8(b
)
any
two
fro
m
larg
er /
bigg
er
incr
ease
in n
umbe
r / m
ore
of th
em
beco
me
gree
n
1tw
o a
nsw
ers
requ
ired
for
1 m
ark
Ign
ore
leav
es g
row
8(c)
any
on
e fr
om
to
spr
ead
the
leav
es o
ut (
to c
olle
ct li
ght)
to
rea
ch t
he s
unlig
ht /
so
they
can
abs
orb
mor
e su
nlig
ht
to t
ran
spo
rt w
ater
/ m
iner
als
/ nut
rient
s to
the
leav
es
to s
uppo
rt th
e pl
ant o
r le
aves
1 Ig
no
re ju
st to
get
the
nutr
ient
s / w
ater
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
9(a)
does
it c
ondu
ct e
lect
ricity
?
1A
ccep
t gr
oup
A c
ondu
ct e
lect
ricity
/ gr
oup
B
does
not
con
duct
ele
ctric
ity
9(b
)
solid
, liq
uid
or g
as (
at r
oom
tem
pera
ture
) 1
Acc
ept
grou
p C
are
sol
ids
/ gro
up D
are
liqu
ids
and
gase
s
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
10
ut
erus
(w
omb)
– id
ea o
f hol
ding
or
prot
ectin
g th
e fe
tus
/ ba
by
liver
– m
akes
bile
/ m
akes
dig
estiv
e ju
ices
/ he
lps
(sm
all
inte
stin
e) d
iges
t foo
d / r
emov
es to
xins
, poi
sons
or
alco
hol
/ br
eaks
dow
n ha
rmfu
l sub
stan
ces
/ re
mov
es h
arm
ful
subs
tanc
es
2on
e fu
nctio
n fo
r ea
ch o
rgan
= 1
mar
k
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k S
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esti
on
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nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
11(a
)
an
y o
ne
fro
m
hunt
ing
/ kill
ing
for
med
icin
e
clea
ring
land
/ de
fore
stat
ion
/ ha
bita
t des
truc
tion
1
11(b
)
any
two
fro
m
no h
untin
g al
low
ed /
hun
ting
can
be c
ontr
olle
d /
elep
hant
s ar
e ke
pt s
afe
/ hun
ting
can
be m
ade
illeg
al /
la
ws
mad
e to
sto
p hu
ntin
g
educ
atio
n / u
se o
f cam
paig
ns
med
icin
e av
aila
ble
/ vet
s in
the
park
el
epha
nts
can
bree
d m
ore
easi
ly /
are
bred
2ea
ch c
orre
ct a
nsw
er =
1 m
ark
Acc
ept
poac
hing
for
hun
ting
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
12(a
)
hits
the
dru
m w
ith le
ss fo
rce
1
12(b
)
The
less
loud
the
sou
nd th
e sm
alle
r th
e vi
brat
ions
. 1
12(c
)
soun
d (le
vel)
met
er /
deci
bel m
eter
1
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esti
on
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ks
Fu
rth
er In
form
atio
n
13(a
)
bea
ts p
er m
inu
te
be
ats
puls
e m
inut
e
beat
s pu
lse
mom
ent
bi
ts p
er m
inut
e
bits
per
mom
ent
1m
ore
than
one
ans
wer
circ
led
= 0
mar
ks
13(b
)
His
res
ting
puls
e ra
te is
65
bpm
. H
is h
ighe
st p
ulse
rat
e is
92 b
pm.
His
ave
rage
(m
ean)
pul
se r
ate
is 8
0 b
pm.
2th
ree
corr
ect
= 2
mar
ks
on
e or
tw
o c
orre
ct =
1 m
ark
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Qu
esti
on
A
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er
Mar
ks
Fu
rth
er In
form
atio
n
14
1
2d
fr
s
34
is
i ii
se
e
ee a c t
tol
l
sv
v
nn
g
g
4ea
ch c
orre
ct a
nsw
er =
1 m
ark
answ
ers
in th
e gr
id t
ake
prec
eden
ce o
ver
answ
er in
the
clue
s A
ccep
t m
inor
spe
lling
err
ors
e.g.
des
solv
es fo
r di
ssol
ves
Do
no
t ac
cep
t if
it is
an
inco
rrec
t wor
d e.
g.
filte
rate
for
filte
ring
Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
15
2th
ree
bulb
s w
ith c
orre
ct s
ymbo
ls =
1 m
ark
two
cells
in s
erie
s w
ith o
r w
ithou
t th
e lin
e be
twee
n th
em, c
orre
ct s
ymbo
ls a
nd a
ll co
nnec
ted
toge
ther
with
out
gaps
in w
ires
= 1
m
ark
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ckpo
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11 o
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
16(a
) th
erm
omet
er
1
16(b
)
02040
02
4 time
in m
inut
es
tem
pera
ture
in°C
68
10
6080100
120
3A
ccep
t a
tole
ranc
e of
½ a
sm
all s
quar
e fo
ur
or f
ive
poin
ts p
lott
ed c
orre
ctly
= 2
mar
ks
two
or
thre
e po
ints
plo
tted
corr
ectly
= 1
mar
k o
ne
poin
t plo
tted
corr
ectly
= 0
mar
ks
poin
ts jo
ined
by
stra
ight
line
s =
1 m
ark
Acc
ept
ecf o
f the
line
usi
ng p
lotte
d po
ints
16(c
)
boili
ng /
cha
ngin
g to
a g
as /
cha
ngin
g to
a v
apou
r 1
Acc
ept
eva
pora
tion
16(d
)
3.5
– 3.
8 (m
inut
es)
1A
ccep
t 3
min
s 36
sec
s –
3 m
ins
48 s
ecs
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12 o
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Qu
esti
on
A
nsw
er
Mar
ks
Fu
rth
er In
form
atio
n
17(a
)
lette
r S
in b
otto
m r
ight
han
d bo
x
stic
k
S
1A
ccep
t an
y in
dica
tion
of t
he c
orre
ct a
nsw
er
e.g.
tic
k(
) or
cro
ss (
) m
ore
than
one
box
with
lette
r S
= 0
mar
ks
17(b
)
met
er r
uler
/ ru
ler
/ mea
surin
g ta
pe
1Ig
no
re c
halk
D
o n
ot
acce
pt
scal
e
17(c
)
light
shi
nes
on t
he g
roun
d
light
cha
nges
dire
ctio
n
light
is r
efle
cted
light
is b
lock
ed
1m
ore
than
one
box
tick
ed =
0 m
arks
17(d
)
a
nsw
er
obs
erva
tion
p
red
icti
on
ques
tion
1m
ore
than
1 c
ircle
d =
0 m
arks
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P
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13 o
f 13
17(e
)
the
light
is c
omin
g fr
om a
diff
eren
t dire
ctio
n
You
are
mov
ing
the
stic
k.
You
are
mak
ing
the
stic
k sh
orte
r.
The
light
isco
min
g fro
ma
diffe
rent
dire
ctio
n.
The
light
iscl
oser
toth
e st
ick.
1m
ore
than
1 c
ircle
d =
0 m
arks