5. Sound Waves
1. As an object moves toward
you, frequency seems shorter
– higher pitch
2. As an object moves away,
frequency seems longer –
lower pitch
3. Never the speed that changes,
just the frequency
7. Uses of the Doppler Effect
Doppler Radar
Police Radar
8. Wave Barrier and Bow Waves
When the source is moving as fast as
the waves it produces it reaches a wave
barrier
Once it passes its wave speed is
creates a V shaped pattern – Bow Wave
9. Shock Waves and Sonic
Booms
Shock Waves – Form overlapping cones that
Form a V
Sonic Boom – sharp crack heard when
supersonic aircraft’s shock waves pass