1. Motion & Force

2. What is motion? Motion - a change in the position of an object Motion is all around you! It is a dog walking, a car driving, air circulating, & the Earth revolving around the Sun! Can you think of any more examples?

3. Force Force - a push or a pull on an object Force can cause objects to start moving, stop moving, or change direction

4. Push Push - a force pressed against something to make it move forward, outward, or upward

5. Pull Pull - a force that moves something toward or nearer

6. Push or Pull? Throwing a baseball Picking up a book Rolling a ball to a friend Pedaling a bike Riding a seesaw Jumping off a diving board Shooting a basketball Opening a can of Coke Drinking out of a straw Opening a car door Removing a nail from a wall Dropping a book on the floor

7. Mass & Distance Objects with less mass travel faster & go a farther distance. Objects with more mass travel slower & go a shorter distance.

8. Speed it up! Moving items speed up (accelerate) & slow down (decelerate). The amount that an object accelerates or decelerates is determined by it mass & how much force is pushing or pulling on it.

9. Balanced Forces Balanced forces do NOT cause objects to move. Example - Imagine a game of tug of war. If both teams pull the rope with the same amount of force, the rope will not move because the two forces are balanced. Can you think of any more examples?

10. Useless Fact The longest tug of war game took place between Ireland & England during the Tug of War World Championship in 1988. It lasted 24 minutes & 45 seconds!

11. Unbalanced Forces Unbalanced forces cause objects to move. Example- Think back to the game of tug of war. If one team pulls with more force than the other team, the forces are unbalanced. The team that is pulling with more force will win the game. Can you think of any more examples?