Light and Sound

Target:

Lesson 1 : Making sound

Lessons aim: To learn how sounds are made

Learning outcomes

By the end of the lesson you should be able to:• Explain how sound is caused by vibration• Describe sounds as high, low, loud, quiet• Explain how sounds of different loudness and

pitch are related to differences in vibration• Recognise representations of different sounds

on an oscilloscope• Explain how loudness of sound is related to

amplitude and pitch is related to frequency

• Sounds are made by _____________ objects

• Draw a diagram of each demo and label it show how the sound is created

Wave animation

Watch the demo In the centre of your page draw the sound wave below

Then draw 4 other waves representing sounds that are a)louder b) quieter c)higher pitched d) lower pitched.

An oscilloscope display of a sound wave

Musical instruments

What vibrates to make the sound?

How is a) pitch b) loudness changed ?

Homework

Complete the worksheet : Vibrations pitch and frequency

For next lesson

Learning outcomes

Are you able to:• Explain how sound is caused by vibration• Describe sounds as high, low, loud, quiet• Explain how sounds of different loudness and

pitch are related to differences in vibration• Recognise representations of different sounds

on an oscilloscope• Explain how loudness of sound is related to

amplitude and pitch is related to frequency