The Nature of Sound

Sound

• A source of energy that causes a medium to vibrate

• A disturbance that travels through a medium as a longitudinal wave

• A disturbance that travels through a medium as a surface wave

• A disturbance that depends on the frequency of the pitch

• A disturbance that causes energy to move from place to place

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The speed of sound depends on the _____ of the medium.

• Elasticity

• Density

• Temperature

• Frequency

• Speed

Sound travels faster at higher temperatures

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS4-1

Sound begins with Vibration

• True

• False

• Sometimes True

Between waves F and G, which is higher in pitch?

• Wave F

• Wave G

Tags

NGSS.MS-PS4-1

Select ALL waves that are lower in pitch than wave A.

• Wave B

• Wave C

• Wave D

Tags

NGSS.MS-PS4-1

A low voice has...

• Short wavelengths

• No wavelengths

• Sandwich

• Long wavelengths

Tags

NGSS.MS-PS4-1

Between waves F and G, which is lower in pitch?

• Wave F

• Wave G

Tags

NGSS.MS-PS4-1

A character in an old western movie puts his ear on a railroad track to test if a train is coming. Why is this

• The molecules are compressing and rarefying on the steel tracks, making it harder to hear.

• The sound travels easily through the steel tracks

• The thermal energy of the tracks increase, therefore allowing the train to be heard

Tags

NGSS.MS-PS4-2

The hotter a medium is, the _____ the sound waves would be. The colder an object is, the _____ the sound waves would be

• Faster, Slower

• Slower, Faster

• Higher Pitch, Lower Pitch

• Lower Pitch, Higher Pitch

Tags

NGSS.MS-PS1-4

NGSS.MS-PS4-1