Physics Worksheet - Secondary Schools - Directorate For Quality And Standards Education Page 11
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12i) Which one of the above planets has the shortest year cycle? Explain.
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ii) What information from the table above shows the length of a day on each planet? Hence,
state which of the planets has the longest day.
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iii) From the above table, which planet has the largest gravitational force? Explain.
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iv) The average density of Earth is 5514 kg/m
3
. Calculate the volume of Earth.
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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. Explain.
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Figure 5
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
Explain, in terms of the methods of heat transfer, how double glazed windows reduce energy
losses when compared to single glass windows.
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Physics – Form 3 Secondary – Track 3 – 2015
Page 11 of 12
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