Sound in Different Mediums

1. Strike the tuning fork with a pencil. Listen to how sound travels through the air (gas).

2. Have your partner place the bag of water (liquid) against his or her ear. Strike the tuning fork with a pencil. Have your partner listen to how sound travels through the water (liquid).​ Switch roles.

3. ​Have your partneer place his or her ear on the desk (solid). Strike the tuning fork with a pencil. Have your partner listen to how sound travels through the desk (solid).​ Switch roles.

1. ​Solids

2. Liquids

3. Gases​

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​​Where does sound travel best?

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​​Why does sound travel better in different forms of matter? Discuss with your partner.

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​The denser the form of matter, the better sound waves travel. 1. Solid - particles are close togehter. 2. Liquid - particles are farther apart. 3. Gas - particles are spread even farther apart. When particles are close together sound waves travel better.

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​Look at the picture for a clue. Discuss.

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Sound must have matter to travel. There is no matter in space.​

in outer space.

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Why? Sound needs matter to travel. There is no matter in space.​

​Sound cannot travel:

1. Solids

2. Liquids

3. Gases

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The denser the object the better.​

​Sound travels best through:

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