Across
- 5. Scientist that discovered gravity
- 7. acts on all objects in the u niverse
- 8. planet we live on
- 10. rock that orbits around Earth
Down
- 1. object everything in the universe orbits
- 2. force that pulls things together
- 3. measured by what it is made of
- 4. space universe
- 6. measure of gravitational pull
- 9. something that acts on an object