Sounds And The Doppler Effect

Question 1

Sounds needs a substance to travel through and travels by particles vibrating

Question 2

Which state of matter does sound travel fastest through

Answer 2

Solids
The particles in a solid are closer than in a liquid/gas. This means vibration are more easily passed from particles and so sound travels faster

Question 3

What determines the loudness of a sound wave

Answer 3

Amplitude

Question 4

What determines the pitch of a sound wave

Answer 4

Wavelength

Question 5

What frequencies can humans hear

Answer 5

From 20 hz to 20000 hz

Question 6

What is the speed of sound (in air)

Answer 6

330m/s

Question 7

What happens when a sound wave meets a hard flat surface

What is it called

Answer 7

The sound wave is reflected back from the surface

It is called echo

Question 8

What is the sped of sound in the water

Answer 8

1500m/s

Question 9

What is the equation for the depth?

Answer 9

Depth=speed x half echo time

Question 10

What is The Doppler Effect

Answer 10

The Doppler effect is the apparent shift in the wavelength of a wave when a source move relative to an observer (towards or away)