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Question
Heat is associated with ______.
Options
kinetic energy of random motion of molecules.
kinetic energy of orderly motion of molecules.
total kinetic energy of random and orderly motion of molecules.
kinetic energy of random motion in some cases and kinetic energy of orderly motion in other.
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Solution
Heat is associated with kinetic energy of random motion of molecules.
Explanation:
When a body is heated its temperature rises and in liquids and gases vibration of molecules about their mean position increases, hence kinetic energy associated with the random motion of molecules increases. So, thermal energy or heat is associated with the random and translatory motions of molecules.
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