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123 4 7 10 56 89 1112. What landforms and features are associated with the middle course of a river? LO: To investigate how meanders and ox-bow lakes.

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Presentation on theme: "123 4 7 10 56 89 1112. What landforms and features are associated with the middle course of a river? LO: To investigate how meanders and ox-bow lakes."— Presentation transcript:

1 123 4 7 10 56 89 1112

2 What landforms and features are associated with the middle course of a river? LO: To investigate how meanders and ox-bow lakes form.

3 What is the point where two rivers meet called? –Confluence –Mouth –Source

4 What is the name of the smaller river that joins the main river? –Flood plain –Tributary –Mouth

5 What is the starting point of the river called? –Source –Drainage basin –Channel

6 What is the geographical name for rain, hail, sleet and snow? –Percolation –Infiltration –Precipitation

7 What do we call water turning into a gas –Precipitation –Evaporation –Condensation

8 What is a bend in the river called? –Meander –Watershed –Channel

9 What is the name for the area of land which is drained by a river? –Mouth –Drainage Basin –Confluence

10 What is the end of the river called? –Source –Tributary –Mouth

11 What do we call the circumference of a drainage basin? –Watershed –Edge –Groundwater

12 Learning Outcomes Students MUST be able to describe what a meander is and identify the processes which have produced it. Students SHOULD be able to explain the formation. Students COULD suggest how meanders turn into Ox Bow lakes. http://www.bbc.co.uk/learningzone/clips/rivers- meanders/403.html

13 What is a meander? Meanders are large bends in the course of a river. They begin to appear as the valley floor becomes flatter and lateral erosion become more significant than vertical erosion.

14 A meander along the River Tees

15 A meander

16 Water flows fastest. Water flows slowest. Deposition takes place. Lateral erosion (corrasion) takes place. Sand and shingle builds up to form a slip off slope. Undercutting takes place and forms a river cliff. River is deeper. River is shallower. Bank will eventually collapse. Has less friction and therefore more energy. Most likely to…Inside or outside?

17 How do Ox-bow lakes form? The abandoned part of a meander after a river has straightened its course by eroding through the neck of the meander.

18 What does this look like as a cross section?

19

20

21 I: Water flows fastest. A: Water flows slowest. C: Deposition takes place. J: Lateral erosion (corrasion) takes place. G: Sand and shingle builds up to form a slip off slope. H: Undercutting takes place and forms a river cliff. D: River is deeper. E: River is shallower. F: Bank will eventually collapse. B: Has less friction and therefore more energy. Most likely to… Inside or outside?

22 The future?


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