Unit 4F: Simple circuits: L.O. 1, 2: N.C. 4.1a

Unit 5F: Changing sound

Unit 5F: Changing sound

Unit 5F: Changing sound

Changing Sound

How do each of the instruments make a sound?

What is the sound like from each one?

Why do dogs and cats move their ears?

Unit 5F: Vocabulary

Unit 5F: Vocabulary

Some useful words

Pitch

Loudness

Vibration

Muffle

Tuning

Tension

High

Low

How high or low a sound appears to be

How loud or quiet a sound is

A to-and-fro motion. Sound is made by vibrations

To make a sound quieter

To make an instrument sound as it should

How tight a string is

A high is ‘squeaky’ like a mouse

A low sound is ‘booming’ like a bass drum

Unit 5F: How are sounds made: L.O. 1, 2, 3: N.C. 4.3e

Unit 5F: How are sounds made?

How are sounds made?

How does each object make a sound?

Unit 5F: Sound travelling: L.O. 4: N.C.

Unit 5F: Sound travelling

Sound travelling

Unit 5F: Which material does sound travel through best: L.O. 5, 6: N.C. 4.3g

Unit 5F: Which materials does sound travel through best

Which materials does sound travel through best

What material is the best to stop the sound travelling from the alarm?

Try various materials in the box to see which is the best for the sound to travel through and

which is the best at keeping the sound in

Unit 5F: Why stopping sound is important: L.O. 6: N.C

Unit 5F: Why stopping sound is important

Why stopping sound is important

Unit 5F: Sound insulation: L.O. 7, 8, 9, 10, 11: N.C. Sc.1

Unit 5F: Sound insulation

Sound insulation

In this investigation you are going to plan a test to measure or observe how well different materials muffle sound for use in ear protectors.

The materials you have available are:- Bubble wrap- Towelling- Foam sheeting- Blanket material

Which material do you think will be the best and why do you think this?

Unit 5F: Sound insulation: L.O. 7, 8, 9, 10, 11: N.C. Sc.1

Unit 5F: Sound insulation

How will you make fair comparisons of whether the sound is muffled or not?

What sound source will you use?

What will you vary and how will you ensure that the results you record are reliable and fair?

How will you record these results?

When you have completed the investigation decide if you could have changed anything to make your investigation better. Do you think there is a better way of deciding whether the sound was muffled or not? Do some research to see if there are any instruments that can be used to measure sound levels

Unit 5F: Pitch: L.O. 12: N.C. 4.3f

Unit 5F: Pitch

Pitch

High pitch note

Low pitch note

Unit 5F: Changing pitch and loudness of sounds: L.O. 13, 14, 15: N.C. 4.3f

Unit 5F: Changing pitch and loudness of sounds

Changing pitch and loudness of sounds

Unit 5F: Guitars: L.O. 16, 17: N.C. 4.3f

Unit 5F: Guitars

Guitars

How is the pitch changed on the guitar?

Unit 5F: Changing the pitch of an elastic band: L.O. 16, 17: N.C. 4.3f

Unit 5F: Changing the pitch of an elastic band

Changing the pitch of an elastic band

How can you change the pitch of each ‘string’?

Describe how this can be done and then test if you are correct, report your findings

Unit 5F: Other vibrations: L.O. 18, 19: N.C. 4.3e, 4.3f

Unit 5F: Other vibrations

Other vibrations

What is vibrating to make the sound?

Unit 5F: Changing the length of the air column: L.O. 20, 21: N.C. 4.3e, 4.3f

Unit 5F: Changing the length of the air column

Changing the length of the air column

Unit 5F: Summary: L.O. 22, 23: N.C. 3e, 3f, 3g

Unit 5F: Summary

Concept map

Changing sounds

Sound

Made by vibrations

Travel through air

Water

Wood

PipesGood

Bad

Soft floors

Ear plugs

Soft furniture

Sou

nd trave

lling

throu

gh

materials

Pitch

High

Low

Drum

Pitch

Loudness

Size

Tightness of skin

Loud – hit hard

Soft – hit less hard

Pitch

Stringed Instrument

Length

Thickness

Tightness

Loud

ness

Loud – plucked hard

Soft – plucked less hard W

ind inst

rum

ents

Pitc

hLoudness

High – small column

Low – long column

Loud – blow harder

Soft – blow less hard