12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
Longitudinal Waves
Do Now:
• If you have your recommended review, turn it in to the homework bin.
• If you did not take the test yesterday, come to the front and schedule a time to take it!
K
List at least FIVE things you already know about SOUND WAVES
W
L
List at least FIVE things you want to know about SOUND WAVES
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
How exactly do we hear sound?
What are the 3 smallest bones in your body?
http://www.physicsclassroom.com/mmedia/waves/edl.cfm
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
What controls the pitch?
What controls the volume?
http://phet.colorado.edu/en/simulation/sound
1
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
Pitch:
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
What happens to sound in a vacuum?
> Higher frequency, higher pitch
> Lower frequency, lower pitch
Volume:
> Higher amplitude, higher volume
> Lower amplitude, lower volume
http://phet.colorado.edu/en/simulation/sound
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
Sound requires a MEDIUM to travel!
12.1: Describe properties of sound waves; Apply the Doppler Effect to relative motion
v is different for different mediums some material!
2