Difficulty of the Project
$1 - $5
Approximate Time Required to Complete the Project
10 – 20 minutes
Witness the process of how the lungs expand and contract with the help of the diaphragm. Build your own model lungs out of balloons and soda bottles.
- Balloons(Grocery/Convenience Store)
- Clear Plastic 1 litre Soda Bottles (Grocery Store)
- Tape (Hardware/ Office Supply Store)
- Rubber Bands (Hardware/ Office Supply Store)
- Y Shaped Tube
Build your own lungs out of balloons and soda bottles. See how the pressure inside the bottle affects the shape and compression of the balloon.
- Expand and Contract
- What causes the balloons to expand?
- What causes the balloons to deflate?
- What causes air to go into your lungs?
- What causes air to go out of your lungs?
- Cut the soda bottle’s bottom end so that it has a large circle on the bottom and the spout on the top.
- Put 2 balloons on 2 of the Y shaped tube’s holes.
- Put the 3RdHole inside the bottle and out the spout of the soda bottle.
- Take another balloon and cut the top of it off.
- Put this balloon on the bottom of the bottle so that it covers the circular opening.
- Put a rubber band around this balloon.
- Your lungs should look like this:
- To work the model, pull on the bottom balloon and watch as the 2 balloons on the inside of the bottle grow bigger. As you push the bottom balloon into the bottle, watch the 2 balloons shrink.
- Write down what you think is happening and list what parts of this model represents actual parts in your lungs.
Disclaimer and Safety Precautions
Education.com provides the Science Fair Project Ideas for informational
purposes only. Education.com does not make any guarantee or representation
regarding the Science Fair Project Ideas and is not responsible or liable for
any loss or damage, directly or indirectly, caused by your use of such
information. By accessing the Science Fair Project Ideas, you waive and
renounce any claims against Education.com that arise thereof. In addition, your
access to Education.com's website and Science Fair Project Ideas is covered by
on Education.com's liability.
Warning is hereby given that not all Project Ideas are appropriate for all
individuals or in all circumstances. Implementation of any Science Project Idea
should be undertaken only in appropriate settings and with appropriate parental
or other supervision. Reading and following the safety precautions of all
materials used in a project is the sole responsibility of each individual. For
further information, consult your state's handbook of Science Safety.