OBJECTIVE: TO KNOW HOW A RIVER TRANSPORTS, ERODES AND DEPOSITS
Task 1: River's are awesome! Look at the following photo of the Jinhsa tributary. What do we know about this river? What questions can we ask?
objective: to know how a river changes from source to mouth.
Task 1: Watch this sequence from the London 2012 Olympics. How does the river change from source to mouth? Note down as many ideas that you see.
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the journey of one wooden boulder
David Nash's Wooden Boulder
FROM SOURCE TO MOUTH: THE RIVER TEES
Try the quiz
http://www.bbc.co.uk/scotland/education/int/geog/rivers/flash.shtml
Task 1: Locate the River Tees on Google Maps/Digimaps. Plot the journey of the river from its source to mouth using the path tool. Mark on the following markers:
- Cross Fell (source)
- Cow Green Resevoir
- Middleton-in-Teesdale
- Darlington
- Yarm
- Middlesborough
http://www.bbc.co.uk/scotland/education/int/geog/rivers/flash.shtml
Task 1: Locate the River Tees on Google Maps/Digimaps. Plot the journey of the river from its source to mouth using the path tool. Mark on the following markers:
- Cross Fell (source)
- Cow Green Resevoir
- Middleton-in-Teesdale
- Darlington
- Yarm
- Middlesborough
upper course of the tees
Copy and complete the following paragraph. Use the words below:
In the upper course the river flows over hard, _______________________ rocks. The valley has steep sides forming a ___________________. The river channel is ______________________ and rocky and the river is _____________________ and clear. In the upper course there is the famous High Force waterfall and _______________ as well as rapids and potholes. ___________________ erosion is the main work of the river in the upper course.
impermeable
v-shape
shallow
turbulent
gorge
vertical
In the upper course the river flows over hard, _______________________ rocks. The valley has steep sides forming a ___________________. The river channel is ______________________ and rocky and the river is _____________________ and clear. In the upper course there is the famous High Force waterfall and _______________ as well as rapids and potholes. ___________________ erosion is the main work of the river in the upper course.
impermeable
v-shape
shallow
turbulent
gorge
vertical
formation of a waterfall
Waterfall: Waterfalls are where water descends vertically. Waterfalls are usually created by a change in rock type. As the river moves from hard rock to soft rock, erosion increases creating a waterfall.
As the water falls over the waterfall it erodes the river bed and the bottom of the waterfall. This makes a plunge pool and causes some undercutting. The undercutting creates an overhang which will eventually become too heavy to be supported and collapse into the plunge pool. The whole process then starts again, which means the waterfall is constantly retreating upstream towards the source. As the waterfall retreats it leaves behind a gorge. Gorge: A gorge is a deep sided valley left behind when a waterfall retreats. |
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Waterfalls can flow backwards!!
http://www.bbc.co.uk/news/world-asia-pacific-14217256
http://www.bbc.co.uk/news/world-asia-pacific-14217256