Across
- 3. Newton: the scientist who discovered gravity
- 6. objects in motion will stay moving in a line
- 9. Galilei: the scientist who tested gravity
- 10. one factor that acts on gravity
Down
- 1. the amount of matter in an object
- 2. Dust and Gravity: what the earth is made of
- 4. what the planets orbit because of gravity
- 5. the amount of gravity exerted on an object
- 7. the dust + gas that made our solar system
- 8. the force that governs the solar system