Across
- 1. the scientist who discovered gravity
- 2. the amount of gravity exerted on an object
- 3. the amount of matter in an object
- 5. the scientist who tested gravity
- 7. the dust + gas that made our solar system
- 8. Dust and gases compressed together
Down
- 1. the law that states objects in motion will stay in motion in a line
- 4. one factor that acts on gravity
- 5. The force that governs the solar system
- 6. what the planets orbit because of gravity