Floating Ball

The power of the wind can be seen in a very impressive way in tornadoes, but also in airplanes the wind flow helps the airplane to fly, even though it is heavier than air. We want to use this effect in this experiment to make a ball float in the air.

Materials you need for this experiment:

light ball	Any light ball will work in this experiment. If you have them, table tennis balls work best because they are the right size and are very light.
hairdryer	Any hairdryer will do .

How to do the experiment:

	If your hairdryer has several levels, choose the weakest one and direct the air flow vertically upwards. With your other hand, carefully bring the ball into the middle of the airflow. When you feel the airflow pushing the ball up, you can release it.
	You can now carefully tilt the hairdryer to the side and the ball will still remain in the airflow. The reason is like with the airplane wing, that the different flow speeds above and below the ball keep it floating. If you can set different air speeds on your hairdryer, see what changes when you go to higher flow speeds. How much can you tilt the hairdryer until the ball falls?

Have fun experimenting!