1. Position the tracing paper to cover the wide end of
the funnel and tape it in place so that there are no openings.
2. Place the plastic tube over the other end of the funnel.
Tape in place if necessary and so that there are no openings
or gaps for sound or air to pass through.
3.
Position the wide end of the funnel on your chest
just over your heart and place the other end (tubing) close
to your ear.
What can you hear? Can your count your heartbeats? This
is similar to a stethoscope that a doctor uses to listen to your
heartbeat.
Which of our five senses does this experiment use?
___ Sight
___ Hearing
___ Taste
___ Touch
___ Smell
Check out how Sounds and Vibrations work on our Science Facts
page below.