+ a cup of water
+ ice cube
+ table salt
+ cotton or thin string
Home > Archives for 02/06/13
:: drinking straw
:: two chairs
TAKE an ordinary balloon and tape a drinking straw to it.
Thread a two meter length of thread through the drinking straw. Now place two two chairs about two meters apart and tie one end of the thread to each chair.
Make sure the thread is taut.
If you now blow up the balloon, pull it to one end of the thread, and let it go, it will rocket between the two chairs. Just make sure nobody is sitting on the chairs.
For every action, there is an equal and opposite reaction. Blow up a balloon and let it go – the air rushing out of the neck of the balloon makes the balloon go forwards.
– Foul Facts Science - The Awful Truth.