November 03 - V
November 03 - V
November 03 - V
1 hour
Candidates answer on the Question Paper.
No additional Materials are required.
Write your Centre number, candidate number and name in the spaces provided at the top of this page.
Write in dark blue or black pen in the spaces provided on the Question Paper.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
To investigate the advantages of crowding together in such a group you will investigate the
drop in temperature of hot water in a test-tube.
A B
rubber band or
strip of sticky tape
(a) Prepare a results table to record your readings, which should include the starting
temperature and five readings taken at two minute intervals for the single test-tube, A,
and the central one, B, in the group.
Results Table
[5]
Indicate to your Supervisor, by raising your hand, when you are ready to fill the test-
tubes.
Quickly fill all of the test-tubes with the same depth of hot water. Test-tubes should be filled
to within 2 cm of the top.
As soon as the water is in the test-tubes, start the clock or record the time. Use
thermometers and record the temperature in tubes A and B at the start and every two
minutes until 10 minutes have passed.
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3 For
Examiner’s
Use
(b) Plot a graph of the results to show clearly the difference between the two sets of data.
[5]
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...............................................................................................................................[2]
(ii) Describe the differences between the results for tube A and those for tube B.
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...............................................................................................................................[2]
(iii) Explain how the results shown in the graph show the effects of crowding together of
animals in cold conditions.
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...............................................................................................................................[2]
1 ................................................................................................................................
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2 ................................................................................................................................
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...............................................................................................................................[4]
[Total : 20]
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Examiner’s
Use
2 You are provided with an insect, labelled W1.
(a) (i) Make a simple, outline drawing of W1 to show the features that enable this animal
to be classified as an insect. Label clearly three of these insect features. Details of
the legs are not required.
[6]
(ii) Measure the length of the insect and the length of your drawing. Draw a line on
your drawing to show the length you have measured. Calculate the magnification of
your drawing.
magnification .........................................................................................................[3]
ground level
container to
trap animals
Fig. 2.1
Suggest and explain briefly two precautions you might take or improvements you might
make when catching insects, such as ground-living beetles, using pit-fall traps.
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Examiner’s
Use
(c) You are provided with another insect labelled W2.
(i) Look carefully at the heads of the two insects W1 and W2.
Describe the mouthparts of each insect.
W1 ............................................................................................................................
W2 ........................................................................................................................[2]
W1 ............................................................................................................................
W2 ........................................................................................................................[2]
(ii) Describe three other visible differences between the two insects.
1 ................................................................................................................................
...................................................................................................................................
2 ................................................................................................................................
...................................................................................................................................
3 ................................................................................................................................
...............................................................................................................................[3]
[Total : 20]
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8
SUPERVISOR’S REPORT
*The Supervisor or Teacher responsible for the subject is asked to answer the following questions.
1 Was any difficulty experienced in providing the necessary material? If so, give brief details.
2 Did the candidate experience any difficulty during the examination as a result of faulty material? If
so, give brief details.
3 Did the candidate suffer any accidents with apparatus or materials? If so, give brief details.
4 Please state any other information that is likely to assist the Examiner, especially if this cannot
readily be discovered from the answers.
W1 ....................................................................................................................................................
W2 ....................................................................................................................................................
Declaration (to be signed by the Principal, and completed on the top script from the Centre)
The preparation of the practical examination has been carried out so as fully to maintain the
security of the examination.
Signed .....................................................................
N.B. If scripts are required by CIE to be despatched in more than one envelope, it is essential that a
copy of the relevant Supervisor’s Results (when requested), the Supervisor’s Report and the
appropriate seating plan are sent inside each envelope
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