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Page 1
Sc
Science test
KEY STAGE
3
TIER
57
Paper 1
First name
Last name
School
2008
Remember
The test is 1 hour long.
You will need: pen, pencil, rubber, ruler, protractor and calculator.
The test starts with easier questions.
Try to answer all of the questions.
The number of marks available for each question is given below the
mark boxes in the margin. You should not write in this margin.
If you are asked to plan an investigation, there will be space for you
to write down your thoughts and ideas.
Do not use any rough paper.
Check your work carefully.
Ask your teacher if you are not sure what to do.
For markers use only
TOTAL MARKS
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1.
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Page 2
The table below shows the number of boats used for catching herring fish in
the Norwegian Sea between 1963 and 1967.
number of
fishing boats
year
1963
16
1965
284
1967
326
The bar chart below shows the total mass of herring caught in
the Norwegian Sea between 1963 and 1967.
mass of herring caught
(thousands of tonnes)
year
Use the information above to help you answer parts (a) (i), (ii) and (iii).
(a)
(i) Why did the mass of herring caught increase between 1963 and 1965?
1ai
1 mark
(ii) Suggest why the mass of herring caught decreased between
1965 and 1967.
1aii
1 mark
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(iii) Herring cannot breed until they are four years old.
Fishing for herring was banned in the Norwegian Sea from 1972 to 1976.
Suggest one reason why fishing for herring was banned for this period.
1aiii
1 mark
(b)
The diagram below shows a food web in the Norwegian Sea.
not to scale
(i) How could a decrease in the number of herring cause a
decrease in the number of sand eels?
1bi
1 mark
(ii) How could a decrease in the number of herring cause an
increase in the number of sand eels?
1bii
1 mark
maximum 5 marks
Total
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2.
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Page 4
The drawings below show the trees in a woodland area at the beginning of May and
at the end of May.
beginning of May
end of May
The graph below shows the amount of light reaching the top of the trees and the
woodland floor over one year.
Key
light reaching the
top of the trees
light reaching the
woodland floor
amount
of light
month
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(a)
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Why does the amount of light reaching the woodland floor
decrease during May?
2a
1 mark
(b)
Plants grow on the woodland floor.
Explain why these plants grow bigger and faster when there is plenty of light.
2b
1 mark
2b
1 mark
(c)
Respiration takes place in the cells of all plants.
2c
Complete the word equation for respiration.
1 mark
2c
oxygen +
carbon dioxide +
1 mark
maximum 5 marks
Total
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3.
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(a)
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Page 6
The average life span of a lion in a zoo is 22 years.
The average life span of a lion in the wild is 17 years.
Suggest two reasons why lions live longer in a zoo than in the wild.
1.
3a
2.
1 mark
(b)
John found the following data about five mammals.
average length of
pregnancy (days)
mammal
average life span
(years)
mouse
20
guinea pig
65
leopard
96
15
chimpanzee
250
40
whale
315
50
He plotted points using data from the table.
x
average
life span
(years)
x
x
x
average length of pregnancy (days)
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3bi
(i) Using the points John plotted, draw a line of best fit.
1 mark
(ii) From the graph, describe the relationship between the average
length of pregnancy and the average life span.
3bii
1 mark
(c)
John found data about three other mammals.
average length of
pregnancy (days)
average life span
(years)
human
266
72
horse
340
25
giraffe
440
17
mammal
3ci
1 mark
3ci
(i) Plot these three points on the graph on the opposite page.
1 mark
(ii) Do these points fit the relationship you described in part (b) (ii)?
Tick the correct box.
yes
no
Use the graph to give a reason for your answer.
3cii
1 mark
maximum 6 marks
Total
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4.
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(a)
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Page 8
The table below shows the melting points and boiling points of
four elements.
element
melting point (C)
aluminium
boiling point (C)
660
2520
1540
2760
magnesium
650
1100
mercury
39
357
iron
When answering the questions below, you may give the name of an element
more than once.
Which element in the table is:
(i) a liquid at 0C?
4ai
1 mark
(ii) a solid at 1500C?
4aii
1 mark
(iii) a gas at 500C?
4aiii
1 mark
(iv) a liquid over the biggest temperature range?
4aiv
1 mark
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(b)
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The melting point and boiling point of nitrogen are marked on the scale below.
melting point
of nitrogen
boiling point
of nitrogen
temperature (C)
(i) Draw an arrow on the scale above to show the temperature at which
water freezes.
4bi
1 mark
(ii) When water is a liquid, what is the physical state of nitrogen?
Tick the correct box.
solid
liquid
gas
4bii
1 mark
(iii) What is the physical state of nitrogen at 200C?
Tick the correct box.
solid
liquid
gas
4biii
1 mark
maximum 7 marks
Total
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5.
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Page 10
Lavender oil is a perfume obtained from lavender flowers.
Steam at 100C is passed through the flowers in the apparatus below.
sealed lid
copper tube
pressure-release
valve
tap
lavender flowers
wire mesh
lavender oil
boiling water
water
separator
heat
not to scale
Water vapour and lavender oil vapour pass down a copper tube towards
a separator.
(a)
(i) The lavender flowers are heated in a container with a sealed lid.
Why must the lid be sealed?
5ai
1 mark
(ii) What would happen if the container did not have a pressure-release valve?
5aii
1 mark
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(b)
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Lavender oil vapour and water vapour cool as they pass down the
copper tube.
A mixture of lavender oil and water collects in the separator.
(i) What is the change in the physical state of both lavender oil vapour
and water vapour as they cool?
from
5bi
to
1 mark
(ii) Look at the separator.
How does this show that the water is denser than lavender oil?
5bii
1 mark
(c)
Rosie poured some lavender oil into an oil burner.
She heated it with a candle.
lavender oil
The oil changed state.
A
Which diagram represents this change of state?
Write the letter.
5c
1 mark
maximum 5 marks
Total
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6.
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(a)
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Page 12
Elephants keep cool by losing heat from their ears.
African
elephant
Indian
elephant
Predict which elephant can lose more heat from its ears.
elephant
Give the reason for your answer.
6a
1 mark
(b)
Ben filled two identical cans with 250 cm3 of hot water.
He wrapped strips of metal around them to model the elephants ears.
thermometer
thermometer
strip of
metal
strip of
metal
metal can B
metal can A
He recorded the temperature of the water in each can every 5 minutes.
The table shows his results.
temperature (C)
time (minutes)
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can A
can B
60
60
54
57
10
50
54
15
46
52
20
43
50
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(i) Ben started with water at the same temperature in both cans.
Give one other way he made his test fair.
6bi
1 mark
(ii) He plotted the results for can A and can B and drew lines of best fit.
60
Key
can A
55
can B
temperature
50
(C)
45
40
0
10
15
20
time (minutes)
Why is it more useful to present these results in a graph rather than a table?
6bii
1 mark
(iii) The water in can A cooled more quickly than the water in can B.
Does this support your prediction in part (a)?
Tick the correct box.
yes
no
Explain your answer.
6biii
1 mark
(c)
Ben repeated the investigation. Instead of a thermometer he used a
temperature sensor and a data logger.
Give one advantage of this.
6c
maximum 5 marks
1 mark
Total
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7.
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Page 14
Ninas bicycle has a front lamp and a rear lamp.
Both lamps are connected to the same battery.
front lamp
rear lamp
battery
(a)
The circuit diagram for the lamps is drawn below.
front
lamp
rear
lamp
7ai
(i) On the circuit diagram above, place a letter A to show the
position of a switch to turn only the front lamp on and off.
7aii
(ii) On the circuit diagram above, place a letter B to show the
position of a switch to turn both lamps on and off at the same time.
1 mark
1 mark
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(b)
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Page 15
The bulb in the rear lamp gives out white light.
White light is a mixture of all the colours of light.
bulb
red plastic cover
The plastic cover acts as a red filter.
Red light passes through the filter.
What happens to the other colours that do not pass through?
7b
1 mark
(c)
Nina replaces the battery with a generator called a dynamo.
When Nina pedals her bicycle, the back wheel turns the generator.
Complete the sentences below using words from the box.
chemical
kinetic
electrical
light
gravitational
sound
thermal
7c
As Nina pedals,
energy in her muscles is
1 mark
changed to kinetic energy.
When the generator turns, kinetic energy is changed to useful
7c
energy in the wires. This energy in the wires is
1 mark
7c
changed to useful
energy in the bulb.
1 mark
When the lamps are on, some of the energy in the bulb is wasted as
7c
energy.
1 mark
maximum 7 marks
Total
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8.
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The table shows information about three planets in our solar system.
planet
time taken to orbit the
Sun (Earth-years)
Mars
2.0
Venus
0.6
Earth
1.0
(a)
Give one reason why Venus takes less time than Earth to orbit the Sun.
(b)
The diagram below shows the orbits of Venus and Earth.
The Sun is a source of light. Venus does not produce its own light.
8a
1 mark
Earth
Venus
Sun
not to scale
8b
On the diagram above, draw rays of light to show how Venus can be
seen from Earth. Use a ruler.
1 mark
8b
Draw an arrow on each ray to show the direction of light.
1 mark
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(c)
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Page 17
The diagram below shows how the astronomer Ptolemy drew the
solar system 2000 years ago.
Saturn
Sun
Venus
Moon
Earth
Mars
Mercury
Jupiter
not to scale
(i) The planets Uranus and Neptune are missing from his diagram.
Suggest why Ptolemy did not include these planets in his diagram.
8ci
1 mark
(ii) Today, we know the correct arrangement of the planets in our
solar system.
Give one way the diagram above is incorrect.
Complete the sentence below.
In the correct arrangement
8cii
1 mark
maximum 5 marks
Total
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9.
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Page 18
Kava is a drug. It dissolves in alcohol but not in water.
A scientist tested kava to see if it can reduce the human heart rate.
Before testing the drug on humans, she tested it on water fleas.
water flea
(a)
She gave two groups of water fleas a different treatment.
group
number of
water fleas
treatment
20
one drop of kava
dissolved in alcohol
20
one drop of alcohol
She placed the water fleas in a dish of water under a microscope.
She measured the heart rate of each water flea before the
treatment.
She waited 30 seconds after the treatment was given and
measured the heart rate again.
She calculated the average heart rate for each group.
(i) Why did the scientist measure the heart rate of the water fleas before
the treatment?
9ai
1 mark
(ii) After giving the treatment, why did she wait for 30 seconds before
measuring the heart rate?
9aii
1 mark
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(iii) How could the scientist increase the reliability of the investigation?
9aiii
1 mark
(b)
The results of the experiment are shown below.
45
Key
average 40
heart rate
(beats per
minute)
35
before treatment
after treatment
group
1
group
2
(i) How will the results from group 2 help in the experiment?
9bi
1 mark
(ii) How can the scientist use the results above to work out the effect of
kava alone on the average heart rate of water fleas?
9bii
1 mark
(c)
From this experiment, why could she not be certain how kava will
affect humans?
9c
1 mark
maximum 6 marks
Total
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10. The photograph below shows bacteria that have developed resistance to antibiotics.
They are called MRSA bacteria.
(a)
When MRSA bacteria reproduce, they pass on their resistance to antibiotics
to the next generation.
What part of a cell passes on information?
10a
1 mark
(b)
MRSA bacteria can cause serious infections in people who are ill in hospital.
The bacteria can live on a healthy persons skin or in their lungs without
causing any harm.
Use this information to fill in the table below.
Suggest two ways MRSA bacteria can be spread from person to person.
Suggest how the spread of the bacteria can be prevented for each method.
method of spread
1
10b
1 mark
2
10b
1 mark
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method of prevention
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(c)
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People can be vaccinated against some diseases caused by
bacteria or viruses.
Describe how vaccination prevents a person getting a disease.
10c
1 mark
10c
1 mark
10c
1 mark
maximum 6 marks
Total
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11. (a)
1:26 pm
Page 22
Satish poured some water into a long tank in the school laboratory.
He used a plunger at one end to make a wave.
plunger
tank
water
1.5 m
not to scale
(i) The wave travelled to the other end of the tank.
The speed of the wave was 2 m/s.
How long did the wave take to travel to the other end?
11ai
s
1 mark
(ii) Satish investigated how the depth of water in his tank affected the
speed of the waves.
Write a plan to show how he could do this.
11aii
1 mark
11aii
1 mark
11aii
1 mark
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(b)
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Page 23
Satish found the following information about waves in the sea.
depth of sea water
(m)
speed of wave
(m/s)
10
9.9
20
14.0
30
17.2
40
19.8
The diagram below shows how the depth of sea water changes.
sea water
sea bed
A
Use the information in the table above to help you describe the speed of
a wave as it travels from A to B and from B to C.
11b
1 mark
A to B
11b
B to C
1 mark
maximum 6 marks
Total
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12. (a)
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Page 24
The chemical formula for hydrochloric acid is HCl.
The chemical formula for sodium hydroxide is NaOH.
When they react together, two products are formed.
The chemical formula for one product is NaCl.
(i) Complete the word equation below with the names of both products.
12ai
1 mark
(ii) On the dotted line, give the chemical formula of the other product.
12ai
1 mark
12aii
sodium + hydrochloric
hydroxide
acid
NaOH
HCl
+
NaCl
1 mark
(b)
In experiment 1, Molly put two beakers on a balance.
One contained 20 cm3 of hydrochloric acid.
The other contained 20 cm3 of sodium hydroxide solution.
The total mass was 163.5 g.
hydrochloric acid
sodium hydroxide
She poured the acid onto the sodium hydroxide. They reacted.
Why did the reading on the balance not change?
12b
1 mark
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(c)
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Page 25
In experiment 2, Molly put two beakers on a balance.
One contained 20 cm3 of hydrochloric acid.
The other contained 5 g of sodium carbonate.
hydrochloric acid
sodium carbonate
She poured the acid onto the sodium carbonate. They reacted.
Two of the products are the same as in experiment 1.
(i) Complete the word equation with the names of the three products.
12ci
sodium + hydrochloric
carbonate
acid
+
1 mark
(ii) The total mass at the start was 149.0 g.
When the reaction stopped, the reading on the balance was 147.0 g.
Why was there a loss of mass in this reaction?
12cii
1 mark
maximum 6 marks
Total
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13. Oliver clamped a wooden plank to a desk. There was a 40 cm overhang as
shown in diagram 1.
40 cm
overhang
sag
wooden
plank
metre ruler
floor
diagram 2
diagram 1
Oliver added masses to the end of the wooden plank as shown in diagram 2.
He measured the sag.
The graph below shows his results.
40
35
30
sag 25
(cm)
20
15
10
5
0 x
0
x
500
x
1000
x
1500
2000
mass (g)
(a)
What measurements would Oliver need to take to work out the sag?
13a
1 mark
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(b)
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Page 27
Oliver repeated his test with a new plank with an 80 cm overhang.
His results are shown below.
mass (g)
sag (cm)
1.0
500
15.0
1000
25.0
1500
31.0
2000
35.0
13bi
1 mark
(i) Plot the results from Olivers second test on the grid opposite.
Use the points to draw a line of best fit.
13bi
1 mark
(ii) In the second test the plank sagged with no mass added to it.
Explain what caused this sag.
13bii
1 mark
(c)
Compare the results of Olivers two tests.
(i) How are the results similar for each test?
13ci
1 mark
(ii) How are the results different in the second test?
13cii
1 mark
END OF TEST
maximum 6 marks
Total
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Qualifications and Curriculum Authority 2008
QCA/08/3301 (Pupil pack)
QCA/08/3298 (Mark scheme pack)
282664
