Across
- 4. matter changing from a solid to a liquid
- 5. the layer of gas surrounding Earth
- 9. matter changing from a gas to a liquid
- 12. oceans
- 13. matter changing from a liquid to a gas
- 14. daily state of the air in a place
- 16. flows freely without its volume changing
Down
- 1. rivers, streams, lakes, and glaciers
- 2. rain or snow
- 3. the temperature at which liquid turns to gas
- 6. a physical property of matter
- 7. flows freely and has no set volume
- 8. matter that has a set size and shape
- 10. the part of air humans and animals need
- 11. the way water moves around Earth
- 15. millions of tiny water droplets floating together