The number of complete wavelengths that pass a point in a given time is what?

The number of complete wavelengths that pass a point in a given time is what?

• A. Wavelength
• B. Amplitude
• C. Frequency
• D. Crest

Answer: (C)

Frequency is how many complete wavelengths pass a fixed point in a given amount of time. It tells you how often the wave cycles reach that point. The unit is hertz, and one hertz means one complete wavelength per second. The other terms describe different parts of the wave: wavelength is the distance from one crest to the next crest, amplitude is how tall the wave is, and a crest is the top of the wave. If you observe three crests passing a point in one second, the frequency is three hertz.

Frequency is how many complete wavelengths pass a fixed point in a given amount of time. It tells you how often the wave cycles reach that point. The unit is hertz, and one hertz means one complete wavelength per second. The other terms describe different parts of the wave: wavelength is the distance from one crest to the next crest, amplitude is how tall the wave is, and a crest is the top of the wave. If you observe three crests passing a point in one second, the frequency is three hertz.