Doppler Effect Edexcel IGCSE

Front

The pitch of a sound wave relates to the wave's _________________. Options: Amplitude, Frequency, Wavelength, Period

Back

Frequency

Front

What is the Doppler Effect?

Back

A change in frequency due to the relative motion of a wave source and an observer

Front

What happens to the pitch of the siren of an ambulance as it comes towards you?

Back

It increases

Front

You are driving in a car and honk the horn at a person standing in the street. As you approach the person, what happens to the pitch of the horn according to you in the car?

Back

It stays the same because you are in the car moving with the sound.

Front

Can light change color due to the Doppler Effect?

Back

True

Front

You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?

Back

It decreases

Front

Look at the picture. Who is experiencing a higher pitched sound?

Back

Observer A

Front

Look at the picture. Who is experiencing a lower pitched sound?

Back

Observer B

Front

Long sound waves are...

Back

low pitched

Front

Short sound waves are...

Back

high pitched