

Blog Entries
Conditions of Use
|

My week the third :)
In science lab we made a barometer. A barometer is a instrument that measures air pressure. When air pressure is greater it presses down on the balloon which makes the pen attached to it go up. When the air pressure is lower the air in the jar pushes up which makes the balloon go up making the pen go down. What's really weird is that every square inch is 14.7 pounds of air pressure
Article posted March 14, 2011 at 02:00 PM •
comment • Reads 523
•
Return to Blog List
Add a Comment
Posted Comments
|
Latest 10 Comments:

|