SOUND STUDY GUIDE

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9 Terms

1
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Which travels faster, sound or light?

Light travels faster. (186,000 miles per second). Sound travels at 750 miles per hour.

2
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How is sound produced?

Sound is produced through vibrating objects in a medium (material).

3
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Vibration

The rate of vibration is related to the pitch of the sound. The faster the vibration, the higher the pitch.

4
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In outer space, there are no sounds. Why?

Sounds need something to travel through. In space there is no matter; it is completely empty.

5
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What medium does sound travel best?

Sound travels best through solids.

6
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How is echo produced?

An echo happens when a sound is reflected or bounces off an object.

7
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Volume

The loudness or softness of a sound.

8
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How does sound travel?

* Sound is produced whenever an object 

   vibrates.

* Sound needs a medium (material) through

   which to travel.

* Sound travels through solids, liquids, or 

   gases.

* Sound travels in waves.

* Sound travels faster through solids 

   because the molecules in solids are close

   together. 

* Sound can reflect from the surface of an

  object creating an echo.

9
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What is pitch?

* Pitch is the highness or lowness of the 

   sound.

* The pitch of a sound depends on the

   frequency of the vibrations.

* The greater the frequency, the higher the

   pitch; the lower the rate of frequency, the

   lower the pitch.