Heat is added to an element causing the atoms to bounce back and forth in the molecule. this is an example of which type of motion?
rotational motion
vibrational motion
translational motion
inertia

The correct option is B. Vibrational motion

Explanation:

When an element or a substance is given heat, the molecules present in the element or substance start to vibrate. These vibrations cause the molecule to move back and forth with a certain force. If continuous supply of heat is given then the molecules will  move so vigorously that the element or substance would expand.

When the supply of heat is reduced, the vibrations in the molecules of an element or substance would reduce.

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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