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10.4 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
In a swimming pool the water near the surface is warmer because of
radiation
You get sunburned due to __________ from the sun
radiation
Which color of a surface makes it better at emitting and absorbing infrared radiation, black or white?
black
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
State three factors that affect the rate of transfer of thermal energy by radiation.
Colour and texture of the surface. Surface temperature. Surface area.
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
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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