BOTTLE ROCKETS - THE PINK PANTHER.

We used a plastic drink bottle and made it look like a rocket.

Then we got the ball pump and a stopper with a tube so we could pump air into the bottle.

We filled a third of the bottle with water and tightly fitted the stopper into the bottle. Then we sat it in an old box for the launch pad and pumped the air in.

At first it was easy to pump and then it got harder, and harder -

Mrs Dunn said "Keep pumping, go for it Shanae!"

Then "Whoosh!" - the rocket went way up and we got some water showered down on us.

Shanae

"HOUSTON WE HAVE A PROBLEM"

We had some trouble with the tube letting the air out. We needed

tape up the tube so no air could escape, then it went really well.

Also our stopper needed to fit tighter so it sometimes let air out too.

It was best when we used about a quarter of a bottle of water.

HOW DO BOTTLE ROCKETS WORK ?

The pump forces air into the bottle. Soon, there's so much air inside the

bottle that it pushes out the cork. The water inside the bottle shoots out so fast

that it pushes the bottle in the opposite direction (up into the sky)