Which statement describes radiation?

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Multiple Choice

Which statement describes radiation?

Radiation is heat transfer through electromagnetic waves. This means energy can move from a hot object to a cooler one without touching and even across space where there is no medium at all, like sunlight traveling through the vacuum of space to warm the Earth. The Sun warming your skin or a fire warming a room are everyday examples of radiation. This differs from other ways heat moves. Direct contact transfers heat through touch, which is conduction. When a fluid or gas moves, carrying heat with it due to a temperature difference, that’s convection. The idea of energy moving inside a substance due to vibrations or activity within the material describes conduction through the solid’s lattice. So radiation stands out because it does not require matter to transfer heat.

Radiation is heat transfer through electromagnetic waves. This means energy can move from a hot object to a cooler one without touching and even across space where there is no medium at all, like sunlight traveling through the vacuum of space to warm the Earth. The Sun warming your skin or a fire warming a room are everyday examples of radiation.

This differs from other ways heat moves. Direct contact transfers heat through touch, which is conduction. When a fluid or gas moves, carrying heat with it due to a temperature difference, that’s convection. The idea of energy moving inside a substance due to vibrations or activity within the material describes conduction through the solid’s lattice. So radiation stands out because it does not require matter to transfer heat.

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