3. What
What is
is Sound?
Sound?
• Our first step…brainstorming ideas!
• I had the students think of words or
anything that came to mind, when
they think about “Sound”
• There were lots of great ideas
generated!
4.
5. • As a class we did
the first 2 columns
of the KWL chart
together…
6. Vibrations
Vibrations
• We had defined vibrations as
something moving back and forth
very quickly; vibrations create
Sound
• Then we moved onto our first
experiment to test out
vibrations!
7. Sound is
Sound is Vibrations
Vibrations
• Experiment # 1: To examine (hear and feel) sound vibrations!
• Materials:
• You will need-
A Partner.
A balloon.
• Method:
What you have to do-
• 1) Blow up the balloon.
2) Hold it against your ear.
3) Ask your partner to press their lips against the balloon and
speak.
4) Repeat steps 3 and 4 but this time you should speak and
your friend should listen.
8. Frequency & Pitch
Frequency & Pitch
• We defined pitch as: how high
or how low a sound is; depends
on the number of vibrations
• We defined pitch as how high
or low a sound is; depends on
the number of vibrations
9. Experiment # 2
Experiment # 2
• Experiment: to contrast high pitch and low
pitch!
• Materials:
• You will need-
3 bottles, form a group of 3, water,
recording sheet
• Method:
What you have to do-
• 1) Fill in 100ml of water in first bottle
• 2) Fill in 150ml in 2nd
bottle
• 3) Fill in 200ml in 3rd
bottle
• 4) Blow across the tops of the bottles
(note the differences)
• 5) Tap the bottles (what is the difference?)
