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Waves. Waves. The time it takes for one wavelength to pass is called the period . The number of wavelengths passing at a given time is called frequency. Waves. Sound travels in a wave. The wave is caused by air particles vibrating back and forth. Waves. - PowerPoint PPT Presentation

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Page 1: Waves

Waves

Page 2: Waves

Waves

The time it takes for one wavelength to pass is called the period.The number of wavelengths passing at a given time is called frequency.

Page 3: Waves

Waves

Sound travels in a wave. The wave is caused by air particles vibrating back and forth.

Page 4: Waves

Waves

When the source of sound moves, it creates a Doppler Effect. Notice how the waves are more compressed at the front of the truck then behind it.

Page 5: Waves

Waves

This change in the compression of the waves changes the sound of vehicle as it drives by.

Page 6: Waves

Waves

Light also has characteristics of a wave.

Page 7: Waves

Waves

The Doppler Effect of light is how we study our galaxy in relation to other ones in the known universe. Light has a Doppler Effect just like sound.

Page 8: Waves

Waves

When the source of light is moving away from the observer it is called the red shift.When the source of light is moving toward the observer it is called the blue shift.


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