PHYSICAL SCIENCE CHAPTER 1
What are pushes and pulls?

Vocabulary Words
Force-A force is a push or a pull.

Motion-When an object is moving, it is in motion.

Push-When you push something you move it away from you.

Pull-When you pull something you move it toward you.

Direction-A direction is the path an object takes.

1. Things do not start or stop moving by themselves. They need a force to make them move.

2. A force is a push or a pull.

3. A push or a pull can make something start to move.

4. Think about a water skier. How does he move through the water? A boat pulls him. The pull is a force.

5. Think about a baseball player. How does the ball move? The bat pushes the ball into the air.

6. Pushes and pulls can make object change directions.

7. A soccer player or basketball player will kick or bounce the ball. What happens? The ball changes direction.

Chapter 2
What ways do objects move?

Vocabulary Words

Motion-When an object is moving, it is in motion.

Chapter Review 1. Objects can move in many different ways.

2. Objects can move fast or slow, in a straight line or zigzag, or even round and round.

3. Forces make things move fast or slow.

4. Think about cutting your grass. You move the mower by pushing it in a straight line.

5. Think about pushing a shopping cart. You and the cart move in a straight line.

6. Gravity is a force that pulls all things toward Earth without touching them.

7. Think of a skier coming down a slippery mountain or a car moving down a curvy road. This motion would be zigzag.

8. Think of a tennis ball changing direction over the net, or a fan going from left to right. This motion would be back and forth.

9. When something vibrates it moves back and forth.

10. Instruments such as guitars and violins have strings that vibrate or go back and forth.

11. Think about using a hula hoop or stirring your soup. This movement is round and round.

12. Think about jumping rope. You must push and pull to get the rope to move round and round!

Chapter 3
How Do Magnets Pull Objects?

Vocabulary Words

Magnet-A magnet is an object able to pull some metals toward itself.

Chapter Review 1. Magnets produce a force.

2. A magnet can attract, or pull, some metals, such as iron.

3. All magnets have two different sides called poles.

4. One pole is the north pole. The other pole is the south pole.

5. Poles that are different will pull toward each other.

6. A north pole and a south pole pull two magnets together.

7. Poles that are the same will push away from each other.

8. Two south poles push away from each other. So do two north poles.




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