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
Which of our five senses
does this experiment use?
Check out how
Sounds and Vibrations work on our
Science Facts page.