3. RiversLakes Freshwater Facts Groundwater 100 200 400 300 400 300 200 400 200 100 500 100

4. A smaller stream or river that flows into a main river What is a tributary? Category 1 Question 1

5. The land area that supplies water to a river system. What is a watershed? Category 1 Question 2

6. The many small streams that come together at the source of a river. What are headwaters? Category 1 Question 3

7. This is made up of a river and all its tributaries together. (Two words). What is a river system? Category 1 Question 4

8. The broad, flat valley through which a river flows. What is a flood plain? Category 1 Question 5

9. Plants grow throughout a pond because the water is shallow enough for this to reach the bottom. What is sunlight? Category 2 Question 1

10. Originally a looping curve in a river, this small body of water may be cut off during dryer seasons. What is an oxbow lake? Category 2 Question 2

11. A manmade lake that stores water for human use, among other things. What is a reservoir? Category 2 Question 3

12. A seasonal change that refreshes the supply of nutrients throughout a lake. What is lake turnover? Category 2 Question 4

13. The process in which levels of nutrients build up in a lake, oftentimes leading to the lake drying up and becoming a meadow. What is eutrophication? Category 2 Question 5

14. Water that flows over the ground surface rather than soaking in. What is runoff? Category 3 Question 1

15. Particles of rock and soil that are picked up and moved through the processes of erosion and deposition. What are sediments? Category 3 Question 2

16. Although these are found in the salty ocean water, they actually consist of fresh water. What are icebergs? Category 3 Question 3

17. Huge masses of ice and snow that move slowly over the land. What are glaciers? Category 3 Question 4

18. An area of land that is covered with a shallow layer of water during some or all of the year. What is a wetland? Category 3 Question 5

19. An underground layer of rock or sediment that holds water. What is an aquifer? Category 4 Question 1

20. New water that enters an aquifer. What is recharge? Category 4 Question 2

21. Places where groundwater bubbles or flows out of cracks in the rock. What is a spring? Category 4 Question 3

22. Having pores or openings that permit liquids or gases to pass through. What is permeable? Category 4 Question 4

23. Category 4 Question 5 An underground area of permeable material that is totally filled with water. What is the saturated zone?