Doppler Effect and Sonic Boom

Way in which sound waves are used by animals such as dolphins and bats.

• Echolocation

• Transverse

• Doppler Effect

• Longitudinal

Which is an example of the doppler effect?

• The apparent change in pitch of a police siren as it passes you.

• The delay in sound between the lightning and thunder.

• The change in pressure in your ears when driving up a mountain.

• When you can no longer hear a sound as the pitch increases.

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

• Low pitched
• High pitched
• Normal

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

The Doppler effect is seen when a wave-making source moves toward an observer. 

• True
• False

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). 

When a car moves towards you, the sound of its horn seems relatively...

• Low pitched
• High pitched
• Normal

What direction is this object moving?

• left
• right
• up
• down

What can you tell about the motion of this object?

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

In this clip, the sound of the jet illustrates the doppler effect AS OBSERVED BY

• The man on the ground

• The pilot in the jet

• Both the man on the ground and the pilot in the jet