Pearson 6th Earth Science terms and defintions

1. Water erosion Chapter 10

3. 1. Water cycle- Each part of the cycle drives the other parts.

4. A.____________- water changing to water vapor evaporation

5. A. ____________________ - evaporation from ice; sublimation

6. A. __________ Evaporation from plants transpiration

7. condensation _ -changing water vapor into liquid form

8. precipitation C. ___________- liquid or solid form of water falling to Earth

9. 2. ______________- a network of rills, gullies, which join to form rivers River system

10. runoff 3.________-rainwater that does notsoak into the ground or evaporate

11. 4. Factors that influence runoff: A. type of land B. slope C. amount of rain D. time span in which rain falls E. amount of vegetation F. climate/temperature

12. 5. __________- a stream or river that flows into a larger river tributary

13. 6. ____________- also called a______________ the LAND that supplies water to a river system; the land from which a river collects __________ watershed drainage basin runoff

14. Largest watershed in the US- Mississippi

16. 7. Water Erosion Features

17. rill and gully erosion small streams form and erode a groove into the land; if it continues a gully will form. (channel)

18. stream erosion B. ____________ -water continually erodes the same path making a__________ and ___________ river deeper wider

19. floodplain C.___________ fertile area covered by sediment caused by frequent flooding

20. meander D. __________- When a river or stream begins to curve back and forth

21. Meandering

22. oxbow lake ___________a piece of a meander that has been cut off from the main river

24. F. _____________- wide, sloping deposit of sediment formed where a stream leaves a mountain range alluvial fan

25. delta fan G.______sediments dropped in a _____ shape at the mouth of a river

26. levee H.________an earthen barrier built along a river

27. groundwater 8. ____________water that sinks (leaches) into the porous parts of Earth’s crust (about 90% of all fresh water)

28. 9. ______- a ridge of land that separates watersheds divide

29. pond 10. ______- a small body of still fresh water

30. 11. ________- the place where an organism lives and obtains all the things needed to survive habitat

31. 12. ________-a lake (manmade or natural) that stores water for human use reservoir

32. wetlands 13. _________- land covered with water all or part of the year (marshes, swamps, or bogs)

33. 14. ________- where mouth of a river opens to the ocean; fresh and salt water mix estuary Not as salty Nutrientrich Important habitat

34. Why is an estuary like a… Sponge? An estuary soaks up water. As excess rains flood rivers and streams, wetlands form to absorb water that may otherwise flood dry living areas needed by both animals and people. Hotel? As birds migrate hundreds and thousands of miles across North America, they stop in marshes and estuaries to eat and rest before continuing on their journey. Egg beater? A coastal wetland is a place for nutrient-rich freshwater from a river or stream to mix with saltwater from the bays. As plants photosynthesize, oxygen is added to the mix. Fishes and shellfish take advantage of this life-giving soup. Cradle? An estuary provides a protective haven for young animals: plenty of food and places to hide from predators. Sea grasses and other vegetation give cover.

35. Strainer? The grasses of an estuary act like a sieve. Soil, branches, leaves, and even trash that has washed into the estuary are strained. This allows cleaner water to pass on downstream and into the Gulf of Mexico. Cereal? Plants absorb nutrients and help cycle them through the food web. As the grasses of the estuaries decay, or rot, a nutritious food for animals and fertilizer for other plant life are supplied. Soap? Estuaries trap, neutralize, and decompose sewage and other wastes. Excess nutrients and chemical toxins are absorbed as well. Through chemical reactions and processing by plants, water is cleaned before it passes downstream.

36. permeability low 15. ___________ rockswith a _______ density; many spaces

37. impermeability 16.________________rocks with a ____ density; tightly packed high

38. water table 17. _____________- upper surface of the zone of saturation

39. Zone of saturation _________________ -area where water fills up a permeable layer.

40. Zone of aeration B. ___________________- area of crust filled with air

41. 18. __________ underground layer of rock or sediment that holds water aquifer

43. spring 19._____________- where the water table is close to the Earth’s surface, water may ooze out to form a spring; ____________- form when groundwater comes in contact with hot underground rocks. hot springs

44. 20. ___________ - water under pressure raises to the surface because of the abundance of water in an aquifer. artesian well

45. permeable impermeable

46. geysers 21. ________- hot springs that are forced upward through a small opening

47. The End

48. young stream A. ___________ moves _______, may have white water rapids and waterfalls; high level of energy; erodes ________ swiftly bottom sides faster than the ______

49. ___________________flows less swiftly; erodes waterfall rocks away; more gentle gradient; begins to _____________ (curve back and forth) mature stream meander

50. old stream C. __________flows slowly through a floodplain; has ______ meanders wide