Question

Sound waves require a medium to travel through, such as a solid, liquid or gas because

A) waves cannot move through a vacuum.
B) sound only works within certain pressures.
C) waves only work within certain temperatures.
D) sound is molecules bumping into one another.

Answer 1

The answer is D, Sound is molecules bumping into one another.

Answer 2

D, sound molecules bumping into one another for sure because i just put it in and it was right.