Travel 4.
Waves are energy in motion in some medium. Which is the best
explanation of how waves get their energy?
A. Waves get their energy from the wind.
B. Waves get their energy from random motions of the molecules of
their medium.
C. Waves get their energy from an original or continuing
disturbance of the medium.
D. Waves get their energy from seismic events such as offshore
earthquakes.