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IGCSE Physics Quiz: Thermal Physics

Authored by Williams Kaphika

Physics

9th Grade

Used 5+ times

IGCSE Physics Quiz: Thermal Physics
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22 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(a) The source of solar energy is the Sun. Tick the box next to those resources for which the Sun is also the source of energy. coal geothermal hydroelectric nuclear wind [2]

coal

geothermal

hydroelectric

nuclear

wind

2.

OPEN ENDED QUESTION

3 mins • 1 pt

(i)Explain why the tubes are made of copper and are painted black.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

(ii)In 5.0 s, 0.019 kg of water flows through the tubes. The temperature of the water increases from 20 °C to 72 °C. The specific heat capacity of water is 4200 J / (kg °C). Calculate the thermal energy gained by the water in 5.0 s.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

(iii)The efficiency of the solar panel is 70%. Calculate the power of the solar radiation incident on the panel.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

(a) State what is meant by the specific heat capacity of a substance.

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

(b)A student carries out an experiment to find the specific heat capacity of aluminium. He uses an electric heater and a thermometer, inserted into separate holes in an aluminium block. The following data are obtained. mass of aluminium block = 2.0 kg power of heating element = 420 W time of heating = 95s initial temperature of block = 19.5 °C final temperature of block = 40.5 °C Calculate the value of the specific heat capacity of aluminium given by this experiment.

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

(c)In the experiment in (b), no attempt is made to prevent loss of thermal energy from the surfaces of the block. Suggest two actions the student could take to reduce the loss of thermal energy from the surfaces of the block.

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