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
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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’.
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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.
2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
3
Part Mark Answer Accept Additional guidance
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
Part Mark Answer Accept Additional guidance
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
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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.
2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
satspapers.org
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.
2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
5
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6
2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
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
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2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
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
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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
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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
if more than one box is ticked, aw
ard no mark
* minerals
✓1
c2/3c
if more than one box is ticked, aw
ard no mark
* no water
✓1
b2/3a
don
ot
accept‘Sun’
accept ‘sunlight’* light
* support
11
a i2/3a
a ii2/5b
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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
if more than one box is ticked, aw
ard no mark
*oak tree
→caterpillar →
blackbird →ow
l
* It makes food by photosynthesis.
✓
11
a i2/5e
a ii2/3a
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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
if more than one box is ticked, aw
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
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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
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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
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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
if more than one box is ticked, aw
ard no mark
accept ‘it reflects’accept ‘it bounces off’
*
✓
* it is reflected
11
a i4/3c
a ii4/3c
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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
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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
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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
if more than one box is ticked, aw
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
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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
if more than one line is draw
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
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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
satspapers.org
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
if more than one box is ticked, aw
ard no mark
* evaporation then condensation ✓1
a3/1h
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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
satspapers.org
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
if more than one box is ticked, aw
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
answers are required for the m
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
if more than one box is ticked, aw
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
✓
satspapers.org
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
satspapers.org
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
er and the correct explanation arerequired for the m
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
er and the correct explanation arerequired for the m
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
er and the correct explanation arerequired for the m
arkaccept ‘the graph is steepest’accept ‘the line is steeper’accept ‘it is very steep’
* Bthe graph increases most steeply
1a1/2j
satspapers.org
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
if more than one box is ticked, aw
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
accept the numerical answ
er to a ii÷20
accept the numerical answ
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
satspapers.org
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
satspapers.org
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
if more than one line is draw
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
satspapers.org
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
satspapers.org
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
if more than one box is ticked, aw
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
satspapers.org
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
if more than one box is ticked, aw
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
satspapers.org
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
ay be in either orderb
oth
answers are required for the m
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
satspapers.org
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
if more than one box is ticked, aw
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
if more than one box is ticked, aw
ard no mark
* oviduct ✔1
a2/2g
satspapers.org
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
if more than one box is ticked, aw
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
if more than one box is ticked, aw
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
satspapers.org
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)
satspapers.org
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
ay be in either orderb
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
satspapers.org
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
satspapers.org
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
satspapers.org
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
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