Energy

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What is convection?
occurs in liquids and gases because these materials flow. When a fluid is heated energy is transferred to the particles causing them to move faster, so becomes less dense. (CONVECTION CURRENT)
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What is radiation?
unlike conduction or convection, radiation does not need particles at all, it can travel through a vacuum.Radiated heat energy is carried mainly by infrared radiation, which is part of the electromagnetic spectrum.
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What is radiation?

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unlike conduction or convection, radiation does not need particles at all, it can travel through a vacuum.Radiated heat energy is carried mainly by infrared radiation, which is part of the electromagnetic spectrum.

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