Sound Properties And Uses

Question 1

refraction

Answer 1

When a wave travels from one medium to another and its velocity + direction can change

Question 2

When waves travel from one medium to another..

Answer 2

The frequency never changes

Question 3

What can sound not travel through

Answer 3

A vacuum

Question 4

How can we tell that sound cannot travel through a vacuum?

Answer 4

The bell jar experiment. As air is pumped out of the jar, the bell is getting quieter until it fades away

Question 5

What state of matter does sound travel slowest in. Why?

Answer 5

Sound moves slowest through a gas because the molecules in a gas are spaced furthest apart

Question 6

Which state of matter do sound waves travel fastest in?

Answer 6

Solids as it’s particles are densely packed compared to the other two

Question 7

What happens to your heating abilities as you get older?

Answer 7

Your ability to hear higher frequencies declines with age

Question 8

Suggest what happens to the sound wave when it goes from hot air to cold air

Answer 8

The wave direction will bend towards the normal.
The wavelength will decrease.