Verified Questions & Mark Scheme
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0 1 Infrared waves are transverse waves.
0 1 . Complete the sentence.
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In a transverse wave, the direction of oscillation is
to the direction of energy transfer by the wave.
A student investigated how the colour of a surface affects the rate at which the
surface emits infrared radiation.
Figure 1 shows some of the equipment used.
Figure 1
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0 1 . 2 The student wrote the following hypothesis:
‘The black-coloured flask will emit more infrared radiation than the
silver-coloured flask during 10 minutes of cooling.’
Describe a method to test this hypothesis.
[6 marks]
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0 1 . 3 When will the flasks emit infrared radiation at the greatest rate?
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Give a reason for your answer.
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