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Make Your Own Stethoscope

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2 buddy reviews
by Teisha Rowland, PhD
Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
stethoscopes, health, exercise, heartbeat, heart rate
A homemade stethoscope pressed to a person's chest to hear their heart beat.

Introduction

Have you ever wondered what happens to the heart as we exercise intensely? How does its beating change? A doctor can figure this out by using a tool called a stethoscope, which is a long, thin plastic tube that has a small disc on one end and earpieces on the other end. In this activity, you will make a homemade stethoscope and use it to measure peoples' heart rates at rest and after exercising.

Credits

Teisha Rowland, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,150 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Materials

  • Duct tape or other strong tape
  • Scissors
  • Plastic funnel
  • A cardboard tube from a paper-towel roll
  • Stopwatch or clock that counts seconds
  • A volunteer who can safely exercise intensely for one minute
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Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
stethoscopes, health, exercise, heartbeat, heart rate