Daily Schedule

Tuesday, November 22, 2011

Dr. George Levitates First and Second Graders!

Science with Dr. George is always worthwhile, but today it was positively UPLIFTING! The children used plastic bags, straws, and their own breath to lift up really heavy things - like each other!

Here's how it works. When you blow air into the bag, the air is pushed together, or "compressed." The compressed air pushes on the bag. This makes the bag push on the tabletop and child and lift them up. So the bag filled with compressed air can support their weight. The tires on your bike work in the same way. They are filled with compressed air and can support your weight. When the air leaks out of bike tires, they can no longer support your weight. That is why it's hard to ride your bike when the tires are flat. 

Up we go!

1 comment:

Odie Langley said...

Wonderful lesson and one they will remember for a long time since it was something they could see happen instead of just reading it in a book. Great work Susan.