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| In heat, energy transfer from particle to particle within certain materials, or from one material to another when the two are in direct contact. |
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| Material through which heat can be transferred. |
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| A material that is a poor conductor of heat and that delays the transfer of heat. |
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| A means of heat transfer by movement of the heated substance itself, such as by currents in a fluid. |
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| Energy transmitted by electromagnetic waves. |
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| Any energy, including heat, light, and x-rays, that is transmitted by radiation. It occurs in the form of electromagnetic waves. |
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| The radiant energy emitted by the stars. |
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| Radiant energy emitted from Earth. |
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| The rate of cooling of an object-whether by conduction, convection, or radiation-is approximately proportional to the temperature difference between the object and its surroundings. |
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| The warming effect whose cause is that short-wavelength radiant energy from the sun can enter the atmosphere and be absorbed by Earth more easily than long-wavelength energy from Earth can leave. |
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