Science Crossword

2. for every action there is an equal and opposite reaction- forces occur in pairs, action-reaction
5. the gravitational force exerted on an object
7. a force that resists motion
10. a force that one object can apply to another object without touching it
12. the forces two objects apply to each other
16. any motion in which an object is moving along a curved path
18. the total momentum of a group of objects stays the same unless outside forces act on the objects

1. an attractive force that exists between all objectsis that have mass
3. a push or pull on an object
4. acceleration occurs if something speeds up, slows down, or changes direction
6. forces actcombinesan object that combine and form a net force of zero
8. inertia- object at rest stays at rest object in motion stays in motion unless acted on by a force
9. a measure of how hard it is to stop a moving object
11. in circular motion, a force that acts perpendicular to the direction of motion, toward the center of a curve
13. the combination of all the forces action on an object
14. a push or a pull on one object that is touching it
15. the tendency of an object to resist change in its motion
17. is the amount of matter in an object