Howdy! can be replied to with just a nod and a smile. It simply means Hi! in Texan - not How are you doing?. Or you might reply, Hey Y'all Doon? if you want to engage in proper Texan interactions. Replying in proper English, well pronounced, with each syllable clearly spoken, is HIGHLY discouraged.
The crest of a wave is the point of maximum positive displacement, or upward movement, away from equilibrium, or an undisturbed state. The opposite of crest is trough, which is the point of the greatest negative, downward displacement.
Wave Action at the Waterâs Surface. A wave in the ocean has the same basic shape as many other waves. â¢ The crest is the high point of the wave. â¢ The trough (trawf) is the low point of the wave. â¢ Wave heightis the vertical distance between the top of the crest. and the bottom of the trough.