Hooked on Science: Moving air

What will happen when you blow a stream of air between two balloons suspended from the ceiling? Will they move apart or together?

Materials

* Balloons

* String

* Tape

Instructions

STEP 1: Inflate two balloons and then tie a string to each balloon.

STEP 2: Suspend the balloons from the ceiling.

STEP 3: Blow a stream of air between the balloons.

Explanation

The stream of air flowing between the balloons creates less pushing power or less pressure between the balloons. With more pushing power on the sides, the balloons stay together. You can discover more hands-on experiments by going to www.hookedonscience.org.

Jason Lindsey is a Science Outreach Educator with Hooked on Science. Check out his website "Hooked On Science" at hookedonscience.org for webcasts and experiments that might get you hooked on science. Send him your science questions at jlindsey@hookedonscience.org. More science experiments can be found at www.semissourian.com.