Physics Secondary Schools Worksheet Page 9
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10(v)
Underline the correct answer.
As the cardboard is compressed, its:
• volume (increases / decreases / remains the same).
(1)
• density (increases / decreases / remains the same).
(1)
• mass (increases / decreases / remains the same).
(1)
8.(a) Rachel and Caroline investigate which is the best material to transfer heat from one
place to another using the apparatus shown below. The students test copper, glass and
plastic pipes.
Thermometer
Cold water
Hot water
out
in
Cold water
Pipe
Their results are shown below.
Pipe Material
Initial temperature
Temperature of the
Change in
o
o
of the water (
C)
water after
temperature (
C)
o
10 minutes (
C)
Copper
20
36
Glass
20
23
Plastic
20
21
(i)
Fill in the missing values in the above table.
(3)
(ii)
Name one precaution to obtain accurate results.
__________________________________________________________________________
(2)
(iii) Which material is best at transferring heat ? Give a reason for your answer.
___________________________________________________________________________
(2)
(iv) A volume of 0.15 m³ of water passes through the pipe. The mass of this water is
150 kg. Calculate the density of water.
___________________________________________________________________________
___________________________________________________________________________
(3)
Physics – Secondary Schools – Track 2 – Form 3 – 2013
Page 9 of 10
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