A revision booklet for the rivers module which also prepares students for the fieldwrok activity.

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8. Add the following labels to the graph:

9. Mainly traction loadHighest dischargeUpper, middle, lower courseSteep slope due to potential energy

10. Concave slope

11. Mostly lateral erosion

12. Mostly vertical erosion

13. Deposition of largest load

14. Large amounts of load

16. Label the scale 1cm = 1 metre

17. Above the line mark and label 0,1,2,3,4 and 5m

18. Now draw a vertical line, 2 cms long down from the 0 and 5 marks. Label these lines depth

19. Label the scale 1cm = 50cm

20. Using the following table, plot the depths at each point across the channel.

21. Width012345Depth102550751000

22. Join the points together – you now have the shape of the river channel at this point

23. Shade the channel light blue – this shows the cross sectional area

24. Label an area of erosion, deposition, river cliff, slip-off slope.

26. Label an area of deposition

27. Using a blue pen, draw on the line of fastest flow (called THALWEG)

28. Label two river cliffs

29. Label two slip-off slopes

30. Put an X where an ox-bow lake may form

31. Draw dotted lines across the meander neckRivers – Key Terms<br />Cross sectional area:<br />Wetted perimeter:<br />Velocity:<br />Discharge:<br />Thalweg:<br />Vertical erosion:<br />Lateral erosion:<br />Deposition:<br />Transportation:<br />Cross profile:<br />River cliff:<br />Slip-off slope:<br />Potential/kinetic energy:<br />