Sound is a ______ wave.

• Mechanical

• Electromagnetic

Tags

NGSS.MS-PS4-1

A 10 - db increase in loudness represents

• a twofold increase in intensity

• a fourfold increase in intensity

• a tenfold increase in intensity

• a hundredfold increase in intensity

When your vocal cords relax, you produce sound waves with __ frequencies and ___ pitches.

• lower, lower

• lower, higher

• higher, higher

• higher, lower

Sounds louder than ___ decibels can cause damage to your ears.

• 10

• 20

• 90

• 100

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A sound source vibrating with a large amplitude produces a sound wave with a(n) __ amplitude.

• small

• large

• no

Tags

NGSS.MS-PS4-1

The farther apart a sound wave and its source are, the ___ energy the sound wave has in a given area.

• less

• more

• the distance has no effect on the amount of energy

Tags

NGSS.MS-PS4-1

The ___ energy a sound wave has, the softer it sounds.

• less

• more

• full

Tags

NGSS.MS-PS4-1

The pitch of a sound depends on the ___ of the sound wave.

• amplitude

• intensity

• frequency

• loudness

The waves in front of a moving sound source have

• a higher pitch than the waves behind it

• different properties than trailing waves

• longer wavelengths than than trailing waves

Your awareness of a sound's energy describes

• loudness

• pitch

• frequency

• decibels

Tags

NGSS.MS-PS4-1