Waves Sound

What is something natural that Sound cannot travel through?

• Water

• Air

• Liquids

• outer Space

Tags

NGSS.MS-PS4-2

Good sound absorber

• marble tile

• soft board

• concrete wall

• aluminium sheet

Tags

NGSS.MS-PS4-2

A disturbance that transfers energy from one place to another without transferring energy

• wave

• trough

• pitch

• sound

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's

• concussion. 

• amplitude. 

• reflection.

• frequency. 

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above?

• The distance represented by C would increase.

• The distance represented by C would decrease.

• The distance represented by D would increase.

• The distance represented by D would decrease.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Cletus wants to make ear protectors for people who work around loud jet engines at Hartsfield Airport in Atlanta. Which of the following materials should he experiment with for the best results?

• a material that produces sound

• a material that absorbs sound

• a material that transmits sound

• a material that amplifies sound

Tags

NGSS.MS-PS4-2

Which of the following would you hear as a low pitched sound? 

• sound wave with a frequency of 50 Hz

• sound wave with frequency of 10,000 Hz

• sound wave with an intensity of 10 dB

• sound wave with an intensity of 100 dB

Sound waves travel as ________ waves.

• Transverse

• Longitudinal

• Surface

Sound is made when a source of energy forces the matter around it to __________.

• Vibrate

• Amplitude

• Stay still

• Pitch

Low frequency = _______ Pitch

• Low

• High

Tags

NGSS.MS-PS4-1