Quiz #4 Sounds

The speed of sound at 20 degrees celcius is:

• 331 m/s
• 365 m/s
• 621 m/s
• 343 m/s

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Material (matter) through which a wave travels

• medium

• Doppler Effect

• sound

• pitch

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Sound waves are ALWAYS what type of wave?

• Transverse
• Longitudinal
• Electromagnetic
• Surface Wave

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction
• compression
• crest
• trough

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A part in a longitudinal wave where the particles are spread apart

• compression
• rarefaction
• crest
• trough

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In what state of matter does sound travel the slowest?

• Solid
• Liquid 
• Gas
• Doesn't Matter

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Sound is able to travel faster in solids than in air because the molecules in a solid are

• closer together than air molecules
• more easily moved than air molecules
• moving faster than air moleculesmoving faster than air molecules
• larger than air molecules

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What is a natural Vaccuum that Sound cannot travel through?

• Water
• Air
• Liquids
• Outer Space

When a sound is LOUDER what measurement gets bigger?

• Frequency 
• Amplitude 
• Wavelength 
• Trough

Tags

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If you want to change the pitch of a sound, you have to change the ___

• frequency

• amplitude

• speed

• volume