Energy and Transportation


Any time an object moves from one place to another—even you—it takes energy.

If you walk down the hallway at school, you need energy. This energy comes from the food you eat. If you ride in a car, the car needs fuel in order to run. One way to store energy is in liquid transportation fuels like gasoline, diesel, or jet fuel. Liquid fuels have high energy densities. That means they contain a large amount of energy in a small amount of liquid. (You can drive a long way on a full tank of gas.) Batteries are another way to store energy. Even the most advanced batteries contain less energy than a liquid fuel of the same volume. However, batteries have their advantages too—batteries can be made to be recharged. Also, batteries contain the energy in a solid container; it would be a mess to put a liquid fuel into your cell phone!


Remember—you need fuel in your tank if you want to go somewhere!!!
(Image: Courtesy of DOE/NREL, Credit - Warren Gretz.)