Across
- 1. ice and rocks formed it
- 5. a force
- 7. Plants move around the sun
- 8. ball of gas
- 9. how much matter to find it
Down
- 2. of universal gravitation Everything has gravity
- 3. discovered gravity
- 4. The place where humans live
- 6. frozen water
- 8. nebula The cloud, solar system originated