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Sound Wave Notes

Sound Wave Notes. Chapter 21. Amplitude=Volume Frequency=pitch (high and low sounds) http://www.onlinetuningfork.com/. Computer Lab. What happened when you released all of the air pressure from the room? The volume decreased as air molecules were released.

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Sound Wave Notes

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  1. Sound Wave Notes Chapter 21

  2. Amplitude=Volume • Frequency=pitch (high and low sounds) • http://www.onlinetuningfork.com/ Computer Lab

  3. What happened when you released all of the air pressure from the room? • The volume decreased as air molecules were released. • There was no sound when all air was gone. Sound Requires Matter

  4. When crests line up the amplitude increases, and so does volume-Constructive Interference • When a crest and a trough line up they cancel out and sound is gone-Destructive Interference Wave Interaction of two waves

  5. Ping pong balls moved due to vibrations from the tuning forks. • http://paws.kettering.edu/~drussell/forkanim.html Ping Pong Balls and Tuning Forks

  6. What did you notice happened to the water when you put the tuning fork in it? • Smaller tuning fork=higher pitch, higher frequency, shorter wavelength, less splash • Longer tuning fork=lower pitch, lower frequency, longer wavelength, more splash Tuning Forks and Water

  7. What caused the salt to move on the plastic? • Sound waves transfer________which is transferred to the salt causing it to vibrate. • http://www.physicsclassroom.com/mmedia/waves/tfl.cfm Tuning Forks and Salt

  8. How does the speed of sound change based on the type of matter and the temperature of that matter? Notes from 21.2

  9. The Doppler effect: • How does it occur? • What do the sound waves look like? • How is the sound related to the frequency of the waves before and after the source or listener? • ILLUSTRATE and label frequency

  10. What is the unit for sound? • What are a few examples?

  11. What does an oscilloscope do?

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