Wednesday 4th November 2020

L.C: To explain how sound is made.

L.C: To explain how sound travels to the ear from a source

Let's investigate

Using the elastic band, make noises. 

What do you notice?

How is the elastic band making a noise?

Watch this video. 

What is happening?

Write about what is happening to the rice, explain what is causing the rice to move.

The rice is ______________________________________ because

___________________________________________________________

___________________________________________________________.

How Do We Hear?

Sounds are made when objects vibrate.

The vibration makes the air around the object vibrate and the air vibrations enter your ear - you hear them as sounds.

You cannot always see the vibrations, but if something is making a sound, some part of it is always vibrating.

Sound waves travel through the air down the ear to the ear drum. When the vibrations hit the ear drum, this sends a message to the brain that changes the vibrations into sounds.

Your task

Using the information in this lesson, create a poster to explain how we hear sounds.

Use key vocabulary and diagrams to make your poster clear and eye-catching.

Key Vocabulary

Sound waves

particles      molecules

vibrate         vibration