Radiation is heat transfer by which means?

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Multiple Choice

Radiation is heat transfer by which means?

Radiation is heat transfer by electromagnetic waves, which can travel through a vacuum. This means energy can move from a hot object to its surroundings even without any matter present—like the Sun warming Earth through empty space. The other forms of heat transfer involve matter: direct contact transfers energy by particle interactions (conduction), and energy moving with a flowing fluid carries heat (convection). Descriptions that reference a fluid or conduction in a solid describe those other mechanisms, not radiation. That’s why the electromagnetic-wave description is the best fit.

Radiation is heat transfer by electromagnetic waves, which can travel through a vacuum. This means energy can move from a hot object to its surroundings even without any matter present—like the Sun warming Earth through empty space. The other forms of heat transfer involve matter: direct contact transfers energy by particle interactions (conduction), and energy moving with a flowing fluid carries heat (convection). Descriptions that reference a fluid or conduction in a solid describe those other mechanisms, not radiation. That’s why the electromagnetic-wave description is the best fit.

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