Make a stethoscope:
The stethoscope is device used by medical professionals
for listening to sounds that are created inside an animal
or human body. It is most often used to listen to lung and
heart sounds but it can be used to listen to any sound the body makes!
Over 170 years ago, a man named Laennec invented the first stethoscope. It was a wooden tube about 1 inch in diameter and about 10 inches long. Let's see if you can mimic this wonderful invention...
The stethoscope is device used by medical professionals
for listening to sounds that are created inside an animal
or human body. It is most often used to listen to lung and
heart sounds but it can be used to listen to any sound the body makes!
Over 170 years ago, a man named Laennec invented the first stethoscope. It was a wooden tube about 1 inch in diameter and about 10 inches long. Let's see if you can mimic this wonderful invention...
Materials: Many of us like to play swords with the cardboard tubes from wrapping paper or paper towel. For this project, a cardboard tube from a paper towel roll is all you will need. However if you wish to make the sounds louder you will also need duct tape and a funnel (see below)
Procedure: Now that you know where your heart is located, pair up
with a friend and place one end of the cardboard tube and the other end at your ear.
For a louder sound, duct tape a funnel to one end of the cardboard tube and repeat the process.
Repeat the process on a couple of other friends. Do they all sound the same?
Count the number of beats over the space of a
minute. This number is your heart rate.
Is there another way to do this? (HINT)
Be sure to explain how you made your stethoscope to Mrs Hartt.
(http://www.fi.edu/learn/heart/enrichment/activity_heartbeat.html
with a friend and place one end of the cardboard tube and the other end at your ear.
For a louder sound, duct tape a funnel to one end of the cardboard tube and repeat the process.
Repeat the process on a couple of other friends. Do they all sound the same?
Count the number of beats over the space of a
minute. This number is your heart rate.
Is there another way to do this? (HINT)
Be sure to explain how you made your stethoscope to Mrs Hartt.
(http://www.fi.edu/learn/heart/enrichment/activity_heartbeat.html