Sound Lesson 7 Part 2

Sound Lesson 7 Part 2

Open Ended

Sound cannot travel in outer space. Why do you

think this is?

Open Ended

Can the boy hear the alarm clock? Explain your

answer

Why sound can not travel in a vacuum?

• Sound waves are travelling vibrations of particles.

• There are no particles in a vacuum .

• There are no vibrations.

• Sound can not travel through empty space.

Open Ended

Sound travels fastest through .................................

Open Ended

Sound travels slowest through ........................................

High Intensity and Low Intensity

• When sound waves are very high, the sound is very loud. 

• When they are very low, the sound is

  very quiet.

Open Ended

* What happens when the sound waves are very high?

Open Ended

* What happens when the sound waves low?

Homework

• Activity book pages 12-13-16

• Send photo on viber.

• Get 100 point