|This lesson was created by Brailio, a student in the UniTY Program at the Miami Museum of Science.|
Did you know that "Air" has weight???
It does, and we can prove it!
1. Blow up two balloons to about the same size. Tie the ends of the balloons. Tie a piece of string to the end of each of the balloons. Tie only one string to each balloon. [Please refer to Figure A. below]
2. Tie the other end of each of those strings to the ends of the meter stick. When you are finished, one balloon should hang from each end of the meter stick. [Pleaserrefer to Figure B. below]
3. Tie the third string around the middle of the meter stick extending it in the opposite direction (holding it up) from the hanging balloons. Tie the other end of the string to the middle of the bottom wire of the hanger. The meter stick should swing freely. [Please refer to Figure C. below]
4. Adjust the string until the meter stick balances. Another tight knot on the hanger might make this job a little easier. Tape the string to the meter stick and try to establish the most balanced position. Once you have balanced the meter stick, observe the balloons, their behavior, and their positions. [Please refer to Figure D. below]
5. Ask yourself, "What do you think will happen if you pop one of the balloons?" Have an ADULT prick one of the balloons with the pin and see what happens. [Please refer to Figure E. below]
Compare what you predicted, with what actually happened. What happened to the position of the meterstick? Why?
1. What do you know about air?
2. What are some things you have observed about air?
3. How do living things use air?
4. Is all air clean?
5. What are the properties of air?
For more information on Air and its amazing properties, you can check out these links:
National Air and Space Museum Homepage
The Science Club
SMILE for science