AFOQT Practice Test

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What term describes the lowest point of a wave?

  1. Trough

  2. Crest

  3. Amplitude

  4. Wavelength

The correct answer is: Trough

The term that describes the lowest point of a wave is known as the trough. In wave terminology, a wave oscillates between high points and low points, where the high points are referred to as crests and the low points as troughs. The trough is significant because it represents the minimum displacement of the wave from its equilibrium position. Crest refers to the highest point of the wave, which is the opposite of the trough. Amplitude is the measure of the height of the wave from its equilibrium position to either the crest or the trough, indicating the wave's energy. Wavelength, on the other hand, is the distance between two successive crests or troughs. Understanding these terms is essential for grasping wave properties in physics and other related fields.

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