Across
- 4. a natural underground source of fresh water
- 5. the process of a gas changing to a liquid
- 6. the movement of water between the ocean, air and land
- 8. all the water on and around planet Earth
- 11. the process of liquid changing to a gas
Down
- 1. water falling from the clouds in the sky
- 2. the fresh water beneath Earth's surface
- 3. the air that surrounds a planet
- 7. a set of events that repeats in the same order over and over
- 9. water when it is a gas, such as steam
- 10. a pretend version of something that scientists use when the real thing is too big, small or complicated to work with