2. 60 40 20 40 60 20 40 20 60 20 60

3. The process of wearing something down by friction.

4. Abrasion

5. Fan-shaped deposit of sediment at the base of a slope, formed as water flows down the slope and spreads at the bottom.

6. Alluvial Fan

7. The breakdown or decomposition of rock that takes place when minerals change through chemical processes.

8. Chemical Weathering

9. Area of land at the end, pr mouth, of a river that is formed by the buildup.

10. Delta

11. The process in which transported sediment is laid down.

12. Deposition

13. Continuous high line of land- or ridge- from which water drains to one side or the other.

14. Divide

15. Area of land in which water drains into a stream system.

16. Drainage Basin

17. The process in which sediment is picked up and moved from one place to another.

18. Erosion

19. The process in which layers or sheets of rock gradually break off.

20. Exfoliation

21. Flat area of land on either side of a stream that becomes flooded when a river overflows its banks

22. Floodplain

23. Downhill movement of loose rock or soil.

24. Mass Wasting

25. The breakdown of rock into smaller pieces of the same material without any change in its composition.

26. Mechanical Weathering

27. Open basin that forms when the rood of a cavern becomes so thin that it falls in.

28. Sinkhole

29. The process by which natural forces break down rocks.

30. Weathering

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