The molecules of a hotter material move faster and therefore have higher kinetic energy than the molecules of a cooler material. The process of convection occurs when groups of molecules are displaced to the vicinity of slower or faster molecules and mix with them. Adding energy (heating) atoms and molecules increases their motion, resulting in an increase in temperature. Energy can be added or removed from a substance through a process called conduction. In conduction, faster-moving molecules contact slower-moving molecules and transfer energy to them.
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Answer:
The molecules of a hotter material move faster and therefore have higher kinetic energy than the molecules of a cooler material. The process of convection occurs when groups of molecules are displaced to the vicinity of slower or faster molecules and mix with them. Adding energy (heating) atoms and molecules increases their motion, resulting in an increase in temperature. Energy can be added or removed from a substance through a process called conduction. In conduction, faster-moving molecules contact slower-moving molecules and transfer energy to them.
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