Science 4th grade | UNIT 4: Sound 4.9 Having fun with wind instruments
Each of these pictures shows a woodwind instrument. Some have one pipe and others have many pipes.
People make music from woodwind instruments by blowing down or across the tops of hollow pipes. This makes the air vibrate inside the pipe to make a sound.
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Activity 4.9 (Making sounds by blowing)
You will need: eight glass bottles or jars of the same size water and food colouring - a large jug
Line your bottles up on a table.
You are going to make your own wind instrument and use it to change the pitch of the sound.
Pour water into the jug and colour it with a few drops of food colouring.
Pour water into each bottle like in the picture.
Gently blow across the top of each of the bottles 1–3.
Did you make sounds? Are the sounds from blowing across each of the three bottles the same pitch? Predict what pitch of sounds you will make when you blow across the other bottles. Collect evidence to test your prediction.