Solids, Liquids and Gases

SOUNDSIn

Sounds In Solids, Liquids And GasesLearning Intension

We are learning about How sound travels through materials.

How to use a model to explain how particles help transmit sound.

KeywordsTransmitParticlesModel SoundTravel

Copy and answer starterWhat does most of the sound we hear travel

through?

Class Discussion

How do you hear the

sound from a rock concert?

Sound in a vacuum

Write down all you know about sound travelling in a vacuum.

Can sound travel through a vacuum?

Sound in a vacuum

Why won’t sound travel in a vacuum?

Sounds and Particles

Question: Use particle theory to explain how sound travels through a solid.

(1 mark) for use of diagram(1 mark) for using the right terminology (1 mark) for getting the answer right

Your task: Suggest why sound does not travel through foam.

Homework1. Ultrasonic sound-what are they?

2. Give examples.3. Describe three uses of ultrasonic sound

Due date: Friday 17th January 2014