Annual Examinations For Secondary Schools 2015 (Physics) Worksheets - Department For Curriculum Management Page 6
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125. Maria decided to warm some tomato soup and measure the time taken for its
temperature to rise. The graph below shows the temperature of the soup
against the time taken to heat it from room temperature.
Graph of Temperature / ⁰C against Time /s
Time / s
Figure 3
a) Name the instrument used to measure temperature. ____________________________ [1]
b) From the graph, find the room temperature. ________
[1]
°��
c) What is the temperature of the soup after 40 seconds? ________
[1]
°��
d) Assuming the rate of temperature rise will remain the same, what is the total time needed to
heat the soup from room temperature to 50
? _____________ s
[1]
°��
e) If the specific heat capacity of the tomato soup is 3980
and the mass of the soup is
�� /���� °��
0.5 kg, find the heat energy needed to heat up the soup from 20
to 50
.
°��
°��
__________________________________________________________________________
__________________________________________________________________________
________________________________________________________________________[2]
Page 6 of 12
Physics – Form 3 Secondary – Track 2 – 2015
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