Landforms Landforms created by created by

riversriversLOLO To know how To know how

meanders and oxbow meanders and oxbow lakes develop.lakes develop.

Use p12/13 in Use p12/13 in connections and connections and define these key define these key words:words:meander, load, river bank, river cliff, meander, load, river bank, river cliff,

undercutting, river beach, flood plain, undercutting, river beach, flood plain, alluviumalluvium

Starter: Waterfalls recap!!!

• These statements are in the wrong order, you need to say what order they should be in. Write down the correct sequence in the back of your book – you have 60 seconds!!!

• I.e.. 1, 3, 5, 2 etc.

Starter: Waterfalls recap!!!

1. Hard rock over soft rock – a ledge forms

2. Material in the plunge pool undercuts hard rock ledge3. Soft rock erodes forming a plunge pool

4. Waterfall retreats

5. Gorge forms

6. Hard rock ledge collapses

Who got them all right? – put the merit in your books Who got them all right? – put the merit in your books

The formation of meandersThe formation of meanders

Meanders are the Meanders are the bends in rivers. This bends in rivers. This is usually found in is usually found in the middle part of the middle part of the river. the river.

The formation of meandersThe formation of meandersThis happens when, over time you get more This happens when, over time you get more erosion erosion on the outside of a kink in the river on the outside of a kink in the river than the inside. Eventually this will make large than the inside. Eventually this will make large bends in the river called bends in the river called meandersmeanders..

Q1) Q1) Where in the river will the water be flowing the fastest?Where in the river will the water be flowing the fastest?

Q2) Q2) Why do you think that sand gets deposited on the inside of the Why do you think that sand gets deposited on the inside of the meander? (Point B)meander? (Point B)

AA BB

The formation of meandersThe formation of meandersSteep bank - erosionSteep bank - erosion

Flat bank - Flat bank - depositiondeposition

The formation The formation of meandersof meanders

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Task:Task: Copy diagrams Copy diagrams 1 and 2 into your 1 and 2 into your booksbooks

Look at the arrow, why do Look at the arrow, why do you think it is double you think it is double ended?ended?

Complete worksheet 1.4Extension: ‘extras’ p13