1. Post Test

2. 1.You throw a ball, but it comes back to the Earth. What force is acting on it? a. push b. magnetism c. gravity

3. 2. When gravity pulls down on an object, it creates the object’s ___________. a. Friction b. weight c. mass

4. 3. The amount of “stuff” an object has (hint: it doesn’t change no matter where you are) a. massb. gravityc. weight

5. 4. What is any push, pull or twist that makes something move? a. friction b. forcec. gravity

6. 5. ______________ is the force that opposes motion, this can also cause your hands to heat up when you rub them together. a. friction b. magnetism c. gravity

7. 6. When talking about how forces affect movement: if an object has more mass, it will have greater gravity which means that it will move _____________. a.faster b.slower c.neither A or B – it won’t move at all

8. 7. If something is heavy, it will be hard to move because it will have more ________ and ______. a.Magnetism and force b.gravity and friction c.pushes and pulls

9. 8. What is the force of attraction and repulsion? a.gravity b.magnetism c.it changes the experiment

10. 9. Magnets usually attract what type of materials? a. plasticsb. metalsc. water

11. 10. ___________ does not affect an objects weight or motion. a. gravityb. magnetismc. mass