Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow...
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Transcript of Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow...
![Page 1: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/1.jpg)
MeandersLesson 8 – page 7
![Page 2: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/2.jpg)
To learn what a meander is.To learn how meanders form.To learn how an ox-bow lake forms.
Key Skill = Communication
Lesson Aims
![Page 3: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/3.jpg)
Water flows faster on the outside of bends.
Abrasion and hydraulic action causes erosion.
This causes undercutting of the bank.
This causes a steep river cliff.
![Page 4: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/4.jpg)
• Water flows slower on the inside of bends.• The river
deposits its load.• This results in a
gentle bank of sand and gravel.• This is called a
point bar.
![Page 5: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/5.jpg)
Point Bar
River Cliff
![Page 6: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/6.jpg)
River Taff - Cilfynydd
River Cliff
Point Bar
Water Works
![Page 7: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/7.jpg)
Draw a labelled sketch to show a meander.
How does a river cliff form?
How does a point bar form?
Activity
![Page 8: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/8.jpg)
Meander Cross-Section
![Page 9: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/9.jpg)
• Draw a labelled sketch to show a meander cross-section.
• Label where it will be deeper and why.
• Label where it will be shallower and why.
Activity
![Page 10: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/10.jpg)
Ox-bow Lakes• Meanders become
more extreme.• This creates a
narrow neck of land.• Fast current erodes
the neck cutting off the meander.
• Meander is sealed off by deposition to create an ox-bow lake.
![Page 11: Lesson 8 – page 7. To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication.](https://reader038.fdocuments.us/reader038/viewer/2022110116/5517f877550346c1568b4ebd/html5/thumbnails/11.jpg)
Draw an annotated sketch to show how sn ox-bow lake forms.
Homework Activity