Sound Wave and Mediums

In association with sound, what is a medium?

• The sound wave itself

• The material through which sound travels

• The vibration of particles

• The pitch of the sound wave

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NGSS.MS-PS4-2

How does sound travel?

• Through empty space

• Through vibrating mediums

• Through electrically charged particles

• It doesn't travel; it just exists in space

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How can sound travel through air?

• Through open spaces

• Through air particles bumping into each other

• Through electronically charged particles

• It doesn't travel; it just exists

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NGSS.MS-PS4-2

Which of the following lists rate the materials in order from the best sound carrier (fastest) to the worst sound carrier (slowest)?

• Gas, liquid, solid

• Solid, gas, liquid

• Liquid, solid, gas

• Solid, liquid, gas

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NGSS.MS-PS4-2

Sound will travel slowest through which of the following forms of matter?

• milk
• desk
• air
• door

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NGSS.MS-PS4-2

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

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NGSS.MS-PS4-2

Sound is caused by? 

• force
• vibrations
• instruments

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To make a sound from a stringed instrument louder you must

• hit it
• pluck it harder
• hold it higher
• pluck it softer

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NGSS.MS-PS4-1

You will see a flash of lightening before you hear the thunder that goes with it because-

• the eye is quicker than the ear
• thunder occurs much later than lightening
• sound travels faster through the  atmosphere than light
• light travels faster through the atmosphere than sound

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

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NGSS.MS-PS4-2