Object: A drawing or apiece of cardboard that resembles what a gas gauge in a car looks like. The pointer should be on full.

Good morning, boys and girls. How many of you have ever taken a ride with your father or mother to the gas station? What do they buy there? (Let them answer.) That's right, gasoline. That is the fuel that we use to make our cars go. We call it energy today. Do we have a lot of gasoline in our world? (Let them answer.) Does it cost a lot? (Let them answer.) People tell us that we are running out of that kind of energy, and we are going to have to find other ways to make our cars go.

What do your parents say when they drive into the gas station for gasoline? (Let them answer.) Have you ever heard them say, "Fill it up"? (Let them answer.) A lot of people say that whe…