Science Models
Science Fair Projects

Published on Sep 16, 2023


The objective: The objective of my project is to see what type of exercises makes people produce the most carbon dioxide.


Materials:test subjects, liquid measuring cup that reads in mL, several glasses to hold water, several straws of equal lenth and diameter, microwave timer, tap water, pH testing paper-hydron lab quality,narrow interval


1.Measure 240 mL. of tap water and pour into glass-repeat 4 times so you end up with 5 glasses of tap water -having the water ready before makes things easer.

2.Dip a piece of the pH paper in the water and compare to to the color scale-recored pH.

3.Have the subject blow into the first glass of water through the straw for 30 seconds.

4.Test the pH of the water immediately. Record this as: "pH before exercise." Dump water , set glass aside and replace with fresh glass.

5. Have test subjects run in place for 5 minutes , then quickly reapeat steps 3 and 4.

6. Have test subject rest for 2 minutes, then have him/her do 25 sit ups. Quickly repeat steps 3 and 4.

7. Have test subject rest for 2 minutes and then do 10 push ups. Quickly repeat steps 3 and 4.

8.Have test subject rest for 2 minutes and then do 20 military presses.

9. Repeat steps 3 and 4.

10.Repeat experiment with each subject.


The Milatary press wich uses both leg and arm muscles, and is faced paced. It really increases heart rate and works the muscles.


Exercises that work more than one muscle group and is aerobic will make you give off the most carbon dioxide which means burning more calories.

The milatary press produced the most carbon dioxide. That means this type of exercise will help people lose weight or keep their weight under control. It can also help keep your heart healthy.

This project wanted to find out which type of exercise makes the most carbon dioxide, and requires the most energy.

Science Fair Project done By Jessie M. Hagiwara