GCSE Geography AQA Restless Earth- Unit 1-5
- Created by: Lewis 2001
- Created on: 01-11-16 20:39
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- GCSE Geography: Restless Earth, Unit 1-5
- Formation of Fold Mountains/ Ocean Trenches
- Fold Mountains
- When a continental and oceanic plate collide, the oceanic is suducted underneath the continental, like the Andes.
- Ocean Trenches
- Ocean Trenches are very deep sections of the ocean floor where the oceanic plate goes down.
- Fold Mountains
- Constructive/Destructive and Conservative plate margins
- Constructive
- Where 2 plates are moving away from each other, e.g, the mid-Atlantic ridge.
- Destructive
- Where 2 plates are moving towards each other, e.g, the east coats of Japan,
- Conservative
- Where 2 plates are moving sideways past each other,e.g, the west coast of the USA.
- Constructive
- Fold Mountains Case Study: The Alps
- General Facts
- Located in central Europe
- Formed 30 million years ago when the African and European plates collided.
- Mont Blanc at 4810m is the tallest peak.
- Human Purpose
- Framing
- Steep upland areas are used to farm Goats, which provide milk, cheese and meat.
- Sunnier Slopes terraced for p;ant vineyards.
- HEP
- Narrow Valleys are dammed to generate HEP, e.g. Switzerland gets 60% of its electricity from HEP.
- Electricity is used locally and exported.
- Tourism
- 100 million tourists visit.
- 70% of tourists visit the steep, snow covered mountains.
- Framing
- General Facts
- Different Volcano types on constructive/ destructive and conservative plate margins
- Composite Volcanos
- Made of Ash and Lava to from alternate layers.
- Steep-sided Volcano
- Shield Volcanoes
- Made of only lava.
- Low, flat Volcano
- Dome Volcanoes
- Made of only lava.
- Steep-sided Volcano
- Composite Volcanos
- Volcanic Eruption Case Study; Montserrat
- Primary and Secondary impacts
- Primary Impacts
- 19 people died and 7 were injured.
- Secondary Impacts
- Volcanic ash has improved soil fertility.
- Primary Impacts
- General Facts
- June 25th 1997
- 4.5 million m3 of rocks and gas
- Immediate and long term responses
- Immediate Responses
- People were evacuated from the south to safe areas in the north.
- Long term responses
- UK provided £41 million to develop the north of the Island.
- Immediate Responses
- Primary and Secondary impacts
- Formation of Fold Mountains/ Ocean Trenches
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