Question

what does it mean when the compressions of a longitudinal wave are far apart?
the wavelength is shorter.
the amplitude is shorter.
the amplitude is higher.
the wavelength is longer.

Explanation:

In a longitudinal wave, the distance between consecutive compressions is defined as the wavelength. If compressions are far apart, this distance (wavelength) increases. Amplitude refers to the maximum displacement of particles from their rest position, which is unrelated to the spacing of compressions.

Answer:

The wavelength is longer.