Across
- 4. cycle Continuous circulation of water through the hydrosphere
- 7. Cycling of water vapor through evaporation and transpiration
- 8. A model that you cannot change and usually involves time as a variable
- 9. The Earth itself-rocks, mountains, beaches
- 10. system Both energy and matter can enter and leave freely
- 12. system Energy may enter, but matter doesn't leave or enter
Down
- 1. Contains all the water near or at Earth's surface
- 2. change Does not change identity and can be undone
- 3. cycle Biogeochemical cycle involving carbon
- 5. Gaseous envelope surrounding Earth that protects us
- 6. The sphere that contains life
- 11. A representation of an object too big, small, or fast to view with the naked eye