Across
- 6. an area or ridge of land that separates waters flowing to different rivers, basins, or seas.
- 8. the rigid outer part of the earth, consisting of the crust and upper mantle
- 9. basin any area of land where precipitation collects and drains off into a common outlet
- 10. the envelope of gases surrounding the earth or another planet.
- 12. a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles.
Down
- 1. water held underground in the soil or in pores and crevices in rock.
- 2. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
- 3. a scientist who researches the distribution, circulation, and physical properties of the earth's underground and surface waters.
- 4. a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
- 5. warming a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
- 7. cycle the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration
- 11. the quality or degree of being saline