Multiple choice general knowledge science & technology

By counting the number of crests that pass in a given amount of time, a person can calculate the

  1. wavelength

  2. amplitude

  3. velocity

  4. frequency
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Frequency is defined as the number of complete wave cycles (or crests) that pass a fixed point per unit time. By counting how many crests pass in a given time interval and dividing by that time, you directly calculate frequency. Wavelength (A) is the distance between crests, amplitude (B) is wave height, and velocity (C) is speed - none of these are calculated by counting crests over time.

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