Pluck the string soft, then pluck it hard. What is the difference? Why?
More energy in loud sound, less energy in soft sound
Name 2 words that are like sounds?
Boom, Pop,
How does a rubberband noise reach our ears?
The rubberband first vibrates and it sets off a chain reaction of air molecules
What do you mean by vibration?
When the string vibrates the molecules near it, setting out a series of vibrations, till it reaches your ear.
What is air made up of?
Tiny particles called molecules
How does sound move from a bell to your ear?
Sets out a chain reaction of sound molecules from the bell to your ear
What is a note?
When the sound particles move in a particular set way or rhythmn, a note is created
What is noise?
When Sound molecules move randomly
Find 2 sources of loud sound in your house
Mixie, Vacuum Cleaner, Toy
When you stop the rubberband when it is vibrating, What happens? Why?
Sound stops, cos vibrations stop
Name 2 soft sounds
Fridge, AC, A whisper
What do you mean by Sound Sources?
Anything that makes a sound
which part of our ear vibrates and receives the sound?
Ear Drum
What is Sound?
It is a type of energy
Does Sound travel in Space? Give reason
No. Space is vacuum. There are no particles in space
How are Sounds made?
Through Vibrations