Physical Science Sound

A human ear cannot listen to the sound who's frequency is less than :

• 15 Hz

• 20,000 Hz

• 20 Hz

• 50 Hz

Tags

NGSS.HS-PS4-1

Sound which has frequency from 20 Hz to 20 kHz is called as :

• Inaudible sound

• Noise

• Audible sound

• music

Which sound pleases you??

• audible

• music

• noise

• inaudible

Tags

NGSS.MS-LS1-8

Presence of excessive or unwanted sounds in the environment is called :

Will you take all the measures to decrease noise pollution?

• Yes

• No

Tags

NGSS.MS-ESS3-3