1. Review Vocab: Aquatic Environments 4-1

2. a slow-moving body of water where the water seems to stand still; lakes, ponds; and wetlands lentic

3. the area of an aquatic ecosystem where the rooted plants do not reach the surface of the water. open water

4. rocks with a diameter greater that 10 inches (25cm) boulders

5. the regions of the stream with the greatest slope upper reaches

6. curves in a stream meanders

7. the ecosystem along a stream or river that is strongly affected by water riparian zone

8. The sections of a river system with a gentle, steady flow lower reaches

9. The beginning of a stream headwaters

10. The place where the water meets the land, the best place for critters it hide and “make-out” water’s edge

11. the line along the highest elevation that divides two watersheds watershed boundary

12. the low flat land along a stream or river that is periodically flooded floodplain

13. a lentic body of water that is usually larger than a pond and has areas that are too deep for rooted plants to grow lake

14. a lotic body of water much larger and deeper that a stream; fed by smaller streams and sometimes called tributaries river

15. freshwater ecosystems with relatively fast moving water lotic

16. smaller feeder streams or rivers that empty into a larger stream or river tributary

17. the place where the river enters a lake or a ocean mouth

18. the place where the water meets the air surface film

19. areas of a stream with slower moving water (where you might find a phosphate accumulation) pools

20. the land area that is drained when drops of rain join other to flow to a particular stream, river, lake or wetland watershed

21. the place where two streams meet confluence

22. lentic body of water so shallow that rooted plants grow across the entire bottom pond

23. rocks with a diameter greater than 2 inches (5cm) but less than 10 inches (25 cm) cobbles

24. shallow areas in a stream where the water appears white because its surface is broken as it flows over rocks rapids

25. the area of the aquatic environment that is covered with rocks, sand or mud and is the habitat for a variety of small organisms (benthic) bottom

26. sections of a river system of moderate slope with third or fourth order streams middle reaches

27. straight box-like ditch dug to move water more efficiently human-made channel

28. microscopic plants and animals that float in open water plantkon

29. the land area that is drained when drops of rain join other to flow to a particular stream, river, lake or wetland and sometimes called a watershed drainage basin

30. shallow areas of swiftly flowing water riffles