Across
- 3. heats liquid on Earth's surface
- 4. water turns from liquid to vapor
- 7. water falls to the Earth
- 8. water is essential to ________
Down
- 1. process of vapor turning to liquid and forming clouds
- 2. most of Earth's surface is covered in __________
- 5. water has been ___________ since the beginning of time
- 6. water can fall to Earth as rain, snow, sleet or _________