COVERTING ENERGY TO MOTION

• You use energy every day. Energy is the ability to cause change. Any time you move, you are using energy. When you bounce a ball or ride a bike, you use energy from your body to make the ball or the bike move. When your parents cook food for you to eat, they use heat energy to change the food from raw to cooked.

• Not all energy is used as soon as you get it. Sometimes energy is stored to be used later. Stored energy can be chemical energy stored in a battery, or in your body. It can also be potential energy based on what position something is in. A ball at the top of a hill has potential energy because of its position. A soccer player standing ready to kick a ball has potential energy, too.

• Energy of motion is also called kinetic energy. Potential energy converts, or changes into, kinetic energy when the thing or person begins to move. When the ball starts rolling down hill, or the soccer player kicks the ball, kinetic energy is now working. Energy often changes forms. When you switch on your light, electricity converts into light. When you eat, chemical energy from your food converts into thermal and mechanical energy that allows you to do work. When you switch on a cell phone, chemical energy from its battery converts into sound energy and light energy.

Name:__________________________________

Answer the following questions based on the reading  passage. Don’t forget to go back to the passage  whenever necessary to find or confirm your answers.

1)   What is energy?

2)  Energy that is based on a person or item’s  position is called

3)  What is another name for energy of motion?

4)   What is another way to say changes into?

5)   What is kinetic energy?