98 Things Move-Mid

Things Move Written by Rhonda Lucas Donald

All around you, things are moving. Cars roll, birds fly, balls bounce, and kids run. Some things move on their own. Other things have to be moved. Some things speed up. Other things slow down. Some move in a line. Others move in circles.

Let's learn what makes things move. Let's also learn why things move in different ways.

Look at the two pictures. How are the bikes in the two pictures different? The bikes in the first picture are at rest. The bike the boy is riding is in motion. What makes some bikes move?

Things move because of something called a force A push is a force. A pull is a force, too. When you push a scooter or pull a sled, you use force to move things.

Things can't move on their own. They stay at rest until a force moves them. A force can make things move in different ways. A force can even stop moving things. Think About It Push or kick a ball with one of your feet. It moves away. Step on the ball and it stops.