Post on 16-Dec-2015
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: 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: 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