Annual Examinations For Secondary Schools 2015 (Physics) Worksheets - Department For Curriculum Management Page 12
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12d) The diagram shows three rods, A,
A
B and C. They are made of glass,
B
C
iron and copper respectively.
i) Name the process by which
heat transfer occurs through
the rods.
________________________ [1]
ii) State on which rod the wax
Figure 8
will melt in the shortest time. Explain.
__________________________________________________________________________
________________________________________________________________________[2]
e) Liam and Emily found two saucepans of the same size but of different colour. One was
black and one was white. They wanted to investigate which one is the best emitter of heat.
Black saucepan
White saucepan
i) Fill in the missing labels in the diagram above.
[2]
ii) They used the above setup to carry out their investigation. Using numbers from 2 to 5,
put the sentences below in the correct order.
Pour equal amount of boiling water in each saucepan.
Set up apparatus as shown in the diagram.
1
Record initial temperature.
Plot a graph of temperature vs time for each can and observe the result.
Record temperature every 5 minutes.
[2]
iii) From the experiment, they concluded that _______________ surfaces are the
_____________ emitters of heat.
[1]
Page 12 of 12
Physics – Form 3 Secondary – Track 2 – 2015
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