What happened to the flame?
Sound is invisible.
You can see and feel the way
it makes the air vibrate as it travels.
When the piece of plastic
is tapped, tiny particles in the
air beside it vibrate. These
vibrations make the particles beside
them vibrate as well. The
vibration travels through the bottle
and the flame is blown out.
Check out how Sounds and Vibrations
work on our Science Facts page below.