Sound and Waves

Sound waves travel as ________ waves.

• Transverse

• Longitudinal

• Surface

The amount of energy a sound wave carries per second through a unit of area is its

• Pitch

• Intensity

• Loudness

Tags

NGSS.MS-PS4-1

Loudness of waves is measured in

• Hertz

• Decibels

• Watts

The _________ of a wave is simply the length of one complete wave cycle.

• amplitude

• wavelength

• trough

• crest

What happens to sound waves when they encounter a solid barrier?

• They speed up.

• They stop completely.

• They can be reflected or absorbed.

• They change into light waves.

Tags

NGSS.MS-PS4-2

Why do sound waves need a medium to travel?

• They need to bounce off objects.

• They need a medium to carry the vibration.

• They cannot travel in a vacuum.

• Both B and C are correct.

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NGSS.MS-PS4-2

How does the medium affect the speed of sound?

• Sound travels faster in solids than in gases

• Sound travels faster in gases than in solids

• The medium does not affect the speed of sound

• Sound cannot travel through solids

Tags

NGSS.MS-PS4-2

What type of waves are sound waves?

• Transverse waves

• Longitudinal waves

• Surface waves

• Electromagnetic waves

In which medium would sound travel the fastest?

• Air

• Water

• Steel

• Vacuum

What is the relationship between amplitude and volume?

• Directly proportional

• Inversely proportional

• No relationship

• Only related at high frequencies

Tags

NGSS.MS-PS4-1