Vocabulary

Which part of the compression wave demonstrates the rarefaction? The molecules pressed together or the molecules spaced out?
The molecules spaced out

A dog is barking and a bird is chirping early in the morning. Which longitudinal wave above most likely represents that the vibrations from the dog? Select a color.
Red

Which number on this diagram shows a compression?
Number 1


Which compression wave would best represent the sound and pitch of a violin based on the vibrations and frequency of the waves? Select a color.
Blue

Kaleb is listening to music and hears a high pitch note from the person singing. Which number on this diagram would most likely represent the high pitch note Kaleb heard?
Number 1