Track 2 Form 3 Physics Worksheet - Annual Examinations For Secondary Schools, 2014 Page 9
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127. This question is about density and pressure in liquids.
a) A piece of wood floats when placed in a container filled with water. Explain why this
happens using the term ‘density’.
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________________________________________________________________________ [2]
b) Samuel is provided with the equipment shown in Figure 10.
He needs to find the density of water.
i) Explain how he can use the equipment to find
the mass of water;
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Figure 10
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[2]
the volume of water.
_____________________________________________________________________ [1]
ii) Which formula is used to find the density of water?
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c) Tank A is a large wide tank which is filled
with water. Tank A needs to be painted and
all the water needs to be transferred into tank
tap
B.
i) Will the water pressure at the bottom of
tank B be greater than, smaller than or
equal to the water pressure at the bottom
of tank A? Give a reason for your answer.
Tank B
Tank A
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_________________________________
Figure 11
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____________________________________
[2]
ii) Tank B has two taps as shown in the diagram. Draw (on Tank B) how water would flow
out of each tap when turned on at the same time.
[1]
d) On March 26, 2012, film director James Cameron reached the deepest
known underwater point on Earth inside a special submersible. The depth
of the sea at this point was 10 900 m.
Physics – Secondary Schools – Track 2 – Form 3 – 2014
Page 9 of 12
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