Question

__________ is the distance between two corresponding points on back-to-back cycles of a wave
amplitude
wavelength
speed
frequency

Explanation:

To solve this, we recall wave - related definitions:

• Amplitude: It is the maximum displacement of a point on a wave from its rest position. So it's not about the distance between corresponding points on cycles.
• Wavelength: By definition, it is the distance between two corresponding points (like two crests or two troughs) on successive cycles of a wave.
• Speed: It is the rate at which a wave travels through a medium, calculated as the product of wavelength and frequency, and not related to the distance between corresponding points on cycles.
• Frequency: It is the number of cycles of a wave that occur in a unit of time, not a distance measurement.

Answer:

B. wavelength (assuming the options are labeled as A. amplitude, B. wavelength, C. speed, D. frequency)