How to make musical instruments.
Changing how hard you hit something
The changing of the size of a string
The vibration of something to move air
Its thickness
Its length
How hard you are plucking it
How tight it is
By stretching some material over a container
Stretching a string between two nails
Blowing over a bottle
Plucking it
Blowing over it
Making it tighter
Hitting it louder
Varying the amount of water in it
Changing the pitch
Changing the height
Changing the volume
The strings
The hollow body
Pegs
Letting something vibrate without touching it
Letting sound bounce back and fourth inside of something
Pulling something really hard
Changing the length of the string
Changing how hard you pull the string
The hollow body
Plucking
Hitting
Blowing
To look at different instruments
To look at how instruments make sound
To look at how instruments change their volume
Wait!
Here's an interesting quiz for you.