Circuitmess Wacky Robot Hertz Instructions Manual page 10

The Science of Sound: How It Travels
Have you ever wondered how sound travels through the air? Have you ever wondered how sound travels through the air?
Well, it all starts with vibrations! Well, it all starts with vibrations!
When an object vibrates, it
creates pressure waves that travel
through the air in all directions.
These pressure waves cause the molecules
in the air to bump into each other,
creating high and low-pressure areas.
This back-and-forth movement
of molecules allows sound to
travel through the air.
But did you know that sound
can also travel through other
materials besides air?
For example, sound can travel through
water, metal, and even human bones!