May The (air) Force Be With You

We are continuing our unit on motion.  Today we reviewed pushing and pulling.  We talked about how an object has to have a force on it to move.  Then I asked the kids how they could get a ball to move without touching.  Pretty quickly someone came up with idea of blowing on it.  They also brainstormed using a fan or having the wind blow it.

We made prediction about which of two types of balls would be easier to move by blowing on them, a golf ball or a ping pong ball.  Then I gave each person a straw and he or she shared the golf and ping pong balls with a partner.  They had to find out which was easier to move by blowing air through the straw.  Here are some pictures:

They had a blast!







We came back together and discussed which ball was easier to move..ping pong..and why...because it is lighter.  Then we recorded the results in our science journals.