why does heat cause molecules to move/vibrate?

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Asked my college biology professor this and the only answer she was able to give me was “that’s just how it works” but I’m not satisfied with that. Why do molecules vibrate?

In: Biology

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Anonymous 0 Comments

Think measuring temperature as a measure of speed like miles per hour or KM per hours but instead of measuring the speed of cars you are measuring the speed of molecules.

Hot = molecules are moving fast
Cold = molecules are moving slow

When something melts the heat (molecule speed) is going up and the molecules start moving so fast they are not standing still and flowing like water

When something like water freezes the molecules slow down to the point where they basically stop.

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