Longitudinal Waves

Question 1

Longitudinal wave

Answer 1

A wave in which the disturbance is parallel to the direction of propogation

Question 2

Sound

Answer 2

Vibration of air particles

Question 3

Compression

Answer 3

When sound waves come closer together

Question 4

Rarefaction

Answer 4

Sound waves move further apart

Question 5

Ultrasound

Answer 5

Waves that have higher frequencies that are not audible by humans

Question 6

What determines how fast sound travels

Answer 6

The density of the medium

Question 7

Echo

Answer 7

Sound wave reflects off solid surface. Can only be distinguished if there is more than a 0.1 second delay between the sound and reflection otherwise ears detect one sound