Materials Required:
- Large can, such as a
coffee or juice can - Hammer
- Nail
- Water in a bowl
Procedure:
- Ask one of your parents to punch 5 holes into a large can, using a hammer and a nail. The holes should be placed on the side of the can, near the bottom, and spaced ¼ inch apart.
- Cover the holes with your hand as you fill the can to the top with water. Then set the can and remove your hand. You will see 5 streams of water spurt out.
- Squeeze the streams together with your thumb and index finger. They will combine to form a single flow of water.
This is what happens:
Each of the 5 streams of water has a film around it. This film, composed of water
molecules itself, encases the water, but is quite elastic and allows movement. When you pinch the streams into 1 stream, a new film is formed, which is strong enough to hold all the water together without breaking apart.
