Across
- 4. What causes day and night on Earth?
- 5. the path that an object takes when it moves around another object in space?
- 6. the gas that we breathe in?
- 7. force that pulls objects toward the center of the Earth?
- 9. process of water turning into vapor when heated?
- 10. state of matter that has no fixed shape and fills the space it's in?
Down
- 1. process by which plants make their own food
- 2. closest star to our planet Earth?
- 3. largest planet in our solar system?
- 8. outer layer of the Earth called where we live?