Materials Required:
- 2 pieces of an antacid tablets
- Empty plastic bottle, such
as a 6-inch-tall shampoo
bottle - Water
- Big bowl
Procedure:
- Break apart an antacid tablet into two pieces and put the pieces in the plastic bottle.
- Now fill up the bottle about ¼ full with water. Let the bottle rest on its side in a big bowl of water. You will see the bottle- boat chug along the surface of the big bowl.
This is what happens:
When the antacid tablet and water combine, they form a gas that escapes through the neck of the bottle. This backward motion of the escaping gas is matched by an equal forward thrust, which propels the boat ahead.
