Surf's Up: A Wind Wave's Journey  

The typical ocean wave is actually a surface gravity wave, also known as a wind wave. While the notion that most waves are generated by wind blowing over the ocean surface is fairly straightforward, a wave's exact point of origin is often much less ...
Subject: crest
Transcript: ? It's the distance between two crests-- The high point on waves. There's a trough, that's the bottom And a crest that's up at the top. Well, the