Across
- 7. highest point of land on a continent; rivers flow into different oceans depending on which side of the divide they start
- 10. daily change in water level of the oceans
- 11. physical characteristic or behaviour of a species that increases the species’ chances of survival in a particular environment
- 12. water containing a high concentration of calcium and magnesium
- 14. stream of water that moves within a larger body of water
- 16. movement of water through a membrane from an area of lower water concentration to one of higher water concentration; technique used for purifying water
- 18. technique for separating solutions that involves boiling and condensation
Down
- 1. characteristics used to describe a stream or river; these include volume and rate of flow, slope and shape of bed
- 2. area of land that drains into one main lake or river
- 3. group of organisms of the same species that live in a particular area
- 4. water that is safe for humans to drink
- 5. device used to measure the density of liquid
- 6. average weather measured over a long period of time
- 8. observe, check, or keep track of something for a specific purpose
- 9. large moving body of ice; glaciers can be many metres or even kilometres thick
- 13. measure of the amount of substances besides water in a water sample; description of how pure a water sample is
- 15. eroded rock fragments and soil carried by water or wind
- 17. amount of dissolved salts in water
- 18. description of the variety of different species in an ecosystem; may also be used to describe variety in a population or species