Water on the Land

Aliya
Note by Aliya, updated more than 1 year ago
Aliya
Created by Aliya about 8 years ago
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Description

GCSE Geography Note on Water on the Land, created by Aliya on 05/09/2013.

Resource summary

Page 1

The River Valley

CourseUpperMiddleLower

GradientSteepMediumGentle

Valley and channel shapeV-shaped valley, steep sides. Narrow, shallow channelGentle sloping valley sides. Wider, deeper channelVery wide, almost flat valley. Very wide, deep channel

Processes of erosion: Hydraulic Action - The force of water breaks rock particles away from the river channel Abrasion - Eroded rocks picked up by river scrape along channel, wearing away Attrition - Eroded rocks picked up by river smash together and break into smaller pieces Solution - River dissolves some types of rock (e.g. chalk and limestone)

Types of transportation: Traction - Large particle like boulders are pushed along river bed Saltation - Pebble sized particles are bounced along the river bed Suspension - Small particles like silt and clay are carried along by the water Solution - Soluble materials dissolve in the water and are carried along

Deposition: Deposition is when a river drops eroded material it's transportingReasons for deposition: The volume of water in the river falls The amount of eroded water material in the water increases The river is shallower#The river reaches its mouth

Meanders

The current is faster on the outside of the bend because the river channel is deeper

Oxbow Lake

Waterfalls

Gorges

                                         

                                        

Floodplain - the wide valley floor on either side of a river which occasionally gets flooded

Levées - natural embankments (raised bits) along the edges of a river channel

Both are found in the lower course of a river

Both are found in the lower course of a river

Erosion

The River Valley

Erosion

River Landforms

River Landforms

Floodplain and Levees

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