The Doppler Effect

Long sound waves are...

• high pitched
• low pitched
• medium pitched

Tags

NGSS.HS-PS4-1

Short sound waves are...

• high pitched
• low pitched
• medium pitched

Tags

NGSS.HS-PS4-1

When the car moves AWAY from you, its horn seems...

• Low pitched
• High pitched
• Normal

Tags

NGSS.HS-PS4-1

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

Tags

NGSS.HS-PS4-1

What can you tell about this object's motion?

• Moving to the North (up).
• Moving to the South (down). 
• Moving to the West (left). 
• Moving to the East (right). 

What can you tell about the motion of this object?

• Moving left.
• Moving right quickly.
• Standing still. 
• Moving up slowly. 

Tags

NGSS.HS-PS2-1

What is the Doppler effect?

• The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.

• The observed change in amplitude of sound or light because of the relative motion of a wave source and the observer.

• The observed change in wave speed of sound or light because of the relative motion of a wave source and the observer.

• The observed change in equilibrium position of sound or light because of the relative motion of a wave source and the observer.

Tags

NGSS.HS-PS4-1

An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?

• It increases

• It decreases

Tags

NGSS.HS-PS4-1

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?

• It increases

• It decreases

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

Tags

NGSS.HS-PS4-1

Light can change color due to the Doppler Effect.

• True

• False

Tags

NGSS.HS-PS4-3