Presentation is loading. Please wait.

Presentation is loading. Please wait.

Image Analysis Task: Describe the features shown in each of the images. How do you think they have been formed? Extension: Come and collect an exam skills.

Similar presentations


Presentation on theme: "Image Analysis Task: Describe the features shown in each of the images. How do you think they have been formed? Extension: Come and collect an exam skills."— Presentation transcript:

1 Image Analysis Task: Describe the features shown in each of the images. How do you think they have been formed? Extension: Come and collect an exam skills extension sheet.

2 Objective: To explain stream channel processes and explain the resultant land forms found on floodplains. 

3 http://www. ibgeographypods
V-Shaped Valleys  Waterfalls  Floodplains, levées, Deltas  Meanders, oxbow lakes & point bars 

4 Were you right? Think Pair Share
How does erosion and deposition impact on a river’s landforms? Stretch yourself!: How does this change as you move down the river’s course? (Use key terms) Upper Course = erosion dominates to form things such as interlocking spurs, waterfalls and gorges. Further Downstream = erosion and deposition combine to form meanders and ox-bow lakes. Near the Sea = deposition dominates to form a floodplain, levees and the river estuary Were you right?

5

6 Nominate one of you in the pair to talk your partner through the image using key terms.

7 Nominate one of you in the pair to talk your partner through the image using key terms.

8 Think Pair Share Ask another pupil: “Why are waterfalls only a temporary feature on a river’s course?” Let them answer. Then they should ask you the same question; now it’s your turn to answer. Finished? – Peer assess. What was ‘good’ about their answer? What about their answer needs more work? If this question was worth 4 marks, what would they achieve and why?

9 We are going to look at a Meanders and ox-bow lakes.
We are going to look at a land processes that takes place in the middle stages of a river. We are going to look at a Meanders and ox-bow lakes. We are going to be looking at the middle stages of a river, this is the area after the steep upper course, but before you get to the estuary and the mouth which are both in the lower course and need the sea. Meander bends are the bends in the river.

10 Learning Checkpoint: Quick Quiz
What is a meander? (1) Which type of erosion is at work on a meander? (1) What is the ‘thalweg’? (1) What does the ‘thalweg’ cause? (2) Why does a meander get bigger? What process of erosion is it? (2) What happens at the ‘hoop’ type feature on a meander? (3) What happens after an ox-bow lake has formed? (1) When does the breaking through of a river often happen? (2)

11 How are levees formed? Use the diagram to turn these simple sentences into detailed ones: Levees are embankments of silt along the bank of a river Levees form along slow flowing rivers Every time a river leaves its channel sediment is deposited Task 2: Explain how river flooding leads to the formation of levees (4 marks) Finished?: Why might humans want to create a man-made levee? 11

12 Paper 1 - Exam Question. Fluvial land forms can only be classified as either erosional, depositional or transportational. Critically examine this statement. (10)


Download ppt "Image Analysis Task: Describe the features shown in each of the images. How do you think they have been formed? Extension: Come and collect an exam skills."

Similar presentations


Ads by Google