How fast do wave trains travel in relation to individual waves in that train?
a. One-third as fast
b. One-fourth as fast
c. One-half as fast
d. Twice as fast
ANS: C
The wave train travels at half the speed as individual waves in the train. This is called the group
velocity. This is the speed at which energy advances in the ocean. Information can be found in the
section Wind Blowing Over the Ocean Generates Waves.
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