Sound Lesson 7 . 2

Sound Lesson 7 . 2

High Instensity and Low Instensity Sounds

• They show different intensites of

  sound waves.

• High intensity sound waves are loud and low intensity

  waves are quiet.

Open Ended

Which one is loud? A or B

Open Ended

Which diagram is quiet? 1 or 2

C is the high intensity sound waves.

D is the low intensity sound waves.

• They show different frequencies of

  sound waves. 

• There are more high frequency sound waves than low ones in the

  same period of time. 

• High frequency sound waves have a high pitch and low

  intensity waves a low one.

There are more high frequency sound waves than low ones in the

same period of time. 

• Which one is loud?

• A

• Which one is quiet?

• B

Homework

• How can we protect our hearing?

• Please write in your notebook.

• Send me on viber.

• You get 100 point.