Give two everyday examples of thermal energy transfer by radiation
Feeling the hotness of Sun’s radiation –. Standing next the a BBQ fire will make you feel hot. Placing your hand next to a hot object such a jar of hot water
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15
In a swimming pool the water near the surface is warmer because of
radiation
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15
You get sunburned due to __________ from the sun
radiation
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A huge rock gets so hot during the day that you can't sit on it. This heat transfer is
radiation
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25
State three factors that affect the rate of transfer of thermal energy by radiation.
Colour and texture of the surface. Surface temperature. Surface area.
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20
Which of the following properties of objects does not directly affect the amount of infrared radiation the object emits and absorbs? Texture/Color/Temperature/Surface area/Mass
mass
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25
State briefly how thermal energy is transferred by radiation
Hot objects emit thermal energy in the form of infrared radiation, which is a type of electromagnetic waves. The hotter the object, the higher the rate of radia
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20
Which color of a surface makes it better at emitting and absorbing infrared radiation, black or white?
