Annual Examinations For Secondary Schools 2015 (Physics) Worksheets - Department For Curriculum Management Page 11

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iv) Name a dwarf planet in our solar system.
________________________________________________________________________[2]
8. Jake noticed that his hand feels hot when he holds it above a lit
match, as shown in the diagram.
a) Name the process by which this takes place.
Figure 5
_________________________________________________ [1]
b) The most effective way of saving money in a home is to have an efficient heating/cooling
system. Double glazed windows are one example.
Two sheets of
glass
Aluminium frame
Air gap
Figure 6
Underline the correct answer: Double glazed windows are more efficient than single glass
windows because they (increase, decrease) heat transfer by conduction and convection. The
air gap helps to reduce heat transfer by conduction because air is a good
(insulator, conductor) of heat.
[2]
c) The diagram below shows a test tube partly filled
with water being heated by a Bunsen burner as
Weight
shown.
i) Explain the use of the weight in the diagram.
________________________________________
____________________________________ [2]
Ice Cube
ii) Why does it take long for the ice cube to
melt?
________________________________________
Figure 7
_____________________________________ [2]
Physics – Form 3 Secondary – Track 2 – 2015
Page 11 of 12

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