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