​Lesson objectives

Students should be able to:

• Know that we hear when sound enter our ears

• ​Identify sources of sound

• ​Describe sound using: loud, soft/faint, high and low

• ​Recognise that sound become fainter as it travels from a source

• ​Recognise that we use hearing to sense danger, communicate and to hear pleasant sound.

• ​Identify how musical instrument make sound.

​Sound sources

• ​Sound come from its sources

• ​There are many sources of sound.

• ​The sources of sound make sound by vibration

​<- Vibration of a drum skin as it make sound.

​Sound and sense of hearing

• ​We use the sense of hearing to hear sound.

• ​The sound enter our ears and our eardrum vibrates

• ​Then the ears send message to our brain.

• ​The brain thinks about the sound and recognise it

​Describing sound

• ​Some sounds are loud like

​The sound of thunder

​The sound of a drill

​The sound of a car horn

​Loud sound can harm our ears. We use ear protector to protect our ears

​Describing sound

• ​Some sounds are soft like

A whisper

A clock ticking

A heartbeat

​Describing sound

• ​When we goes further from a sound source it will become fainter or softer

Listen to the sound or a race car going further away ->

​Describing sound

• Some sound are high like

​The sound of a whistle

​The sound of a mouse

​The sound of glass breaking

​Describing sound

• Some sound are low like

​The sound of a cow

​The sound of drum being hit

​The sound of rumbling train

​How is sound useful?

• ​For communication: talk

• ​For listening to pleasant sound : music

• ​For warning: Siren

Making sound in musical instruments

• We can make sound by blowing

Making sound in musical instruments

• We can make sound by plucking

Making sound in musical instruments

• We can make sound by hitting or shaking