2. Lakes and Reservoirs Sci 6.2

3. A few ways to make lakes 1. Glaciers: carve depressions and make dams

4. 2. Fault lakes: tectonic plates move apart

5. Lake Tanganyika and Lake Malawi in Africa are also a fault lakes

6. Question 1

7. 3. Volcanoes: caldera fills with water Crater Lake National Park, Oregon

9. 4. Meteors: crater fills with water

10. Question 2

11. 5. Sinkholes: limestone hollowed out and collapses

12. Question 3

13. 6. Man-made: dig great big holes or make dams (often called reservoirs)

14. 7. Carolina Bays? Don’t know how they were made GA up to VA

17. Question 4

18. Life in lakes: Amount of sunlight determines what lives where

19. Question 5

20. Plankton: Very small organisms at bottom of food chain Some like plants, some like animals

21. Question 6

23. Lake nutrients: Compounds used by plants, algae, some plankton Ex: nitrates and phosphates

24. Question 7

25. Eutrophication: Increase in nutrients Plants and algae grow faster Lake fills in Becomes dry land eventually Pollution can accelerate

26. Question 8

27. Turnover: Seasonal mixing in fall and spring Cold rains can also produce

28. Question 9