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GCSE Geography Revision

Welcome to this presentation,this will help you with GCSE

Geography revision.

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Contents Page Urban Environment

Rocks & Landforms

Waters & Rivers

Quiz

What is a Settlement

Geological Time

River Flooding

Question 1

Land uses in LEDCs and MEDCs

Classification of Rocks

River Processes

Question 2

Cause of Urbanisation

Rock Types River Profiles

Question 3

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Urban Environment

In this section you will learn about urban environment.

It will display evidential pictures and diagrams.

And provide videos to explain in more detail buy a qualified point of view.

Welcome to the Urban environment section.

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What is a Settlement ? A settlement is a place which has previously been uninhabited, where people establish a community and live there.

Settlements come in a range of different sizes, types and locations.

A settlement may be as mall as a single house in a remote area or a large thriving city.

A settlement may be permanent or temporary.

An example of an temporary settlement would be a refugee camp.

A temporary settlement may become permanent over time.

The reason a settlement was developed or built is can be thought of as its function, for example Southampton is a port.

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Land uses in LEDCs and MEDCs

LEDC’s mean Less Economically developed country

LEDCs have a similar land-use needs to MEDCs.

MEDC’s mean More Economically developed countries

A trade surplus means that the value of exports is greater than imports.

A trade deficit is when there are more imports than exports.

Interdependence between countries means that they are dependent on one another in some way

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Cause of Urbanisation

Urbanisation can cause problems such as transport, congestion and lack of sufficient housing.

Urbanisation means an increase in the proportion of people living in urban areas compared to rural areas.

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Rocks & Landforms

Welcome to Rocks and Landforms.

In this section you will learn about the different Rock types,

Rock Processes, the Classification of Rocks,

Quarrying and Geological Time.

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Geological Time The Geological timescale and the processes occur over a long period of time, It can often be up to millions of years. The earth is thought to be 4,600 million years old. The geological periods relate to events which have happened in the Earth's history, for example during the tropical period there were tropical weather conditions in the U.K and coal and limestone were originally formed.

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Classification of RocksRocks found on the earth’s surface actually come from the inside of the earth. These rocks allow us to know about the earth’s interior. They are organised into three main groups: Igneous Rocks, Sedimentary rocks and Metamorphic.

Igneous rocks are formed by magma from the molten interior of the Earth. When magma erupts it cools to form volcanic landforms. If magma cools inside the Earth it forms intrusive rock, which may later be exposed by erosion and weathering.Examples of igneous rocks include basalt and granite.

Metamorphic rocks have been subjected to tremendous heat and/or pressure, causing them to change into another type of rock. They are usually resistant to weathering and erosion and are therefore very hard-wearing.Sedimentary rocks are formed from sediments that have settled at the bottom of a lake, sea or ocean, and have been compressed over millions of years. The sediment comes from eroded rocks carried there by rivers or ice, and from the skeletons of sea creatures.

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Rock Types• A video to explain rock types

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Waters & Rivers

Welcome to the Waters and Rivers section.

In this section you will learn about river

flooding's, river processes and river profiles.

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River Flooding

A flood occurs when a river or lake bursts it’s banks and the water spills onto the flood plain.

Heavy rain can to make flooding occur more recently.

The faster the water reaches the river channel, the more the river is likely to flood.

River whose waters have overflowed it's banks onto the adjacent floodplain.

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River Processes Key words…Erosion-is the wearing away of rock and soil along the river bed and banks.Hydraulic action- is when the river forces air into cracks and crevices, gradually wearing the river banks away.Abrasion-is where the rocks get carried along by the river, wearing down it’s bed and banks.Attrition- is when rocks which are carried by the river smash together and break into smaller, smoother particles.Solution- is when particles of rock dissolve into the river.

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River Profiles

Long Profiles Upper part of the river has larger bed load, more roughness, turbulence and friction

Lower part of the river has greatest cross-section, highest hydraulic radius, greatest velocity and discharge.

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Quiz

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Question 1What is a settlement?

2. Somewhere where you live

3. Some where you stay for a night.

1. A place which has previously been uninhabited, where people establish a community and live there.

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Question 2

What are the causes of urbanisation?

• 1, Transport, congestion and lack of sufficient housing.

• 2. Congestion, lack of housing and pollution

• 3. lack of housing, noisy environment.

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Question 3• What is the definition of river flooding?

• 1. a river which bursts it banks

• 2. water which runs into the sea

• 3. river whose waters have overflowed it's banks onto the adjacent floodplain