Geography

What are the 4 layers of the Earth?
Inner core, Outer core, Mantle and the Crust.
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Why is the inner core dense?
Because its made of dense metals e.g. Iron.
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Why is the inner core so hot?
There is a lot of pressure which causes heat.
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Why do plates move?
They move because of a convection current
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How is a convection current caused?
A convection current is caused by Adiabatic cooling.
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what is Adiabatic cooling?
This is when warm air rises and expands then starts to fall.
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Where is there a concentration of earthquakes and volcanic activity?
In the South West of North America.
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What is a Destructive Plate Boundary.
Its when the heavier plate sinks under the lighter plate.
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What is a primary tectonic hazard?
It's an event that occurs as a direct result of a volcanic eruption or earthquake.
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What is a secondary tectonic hazard?
It's an event that occurs because of a change in the environment following an earthquake or eruption (indirect).
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What are the advantages of living near a volcano?
Geo-Thermal energy, Tourism and recreation, Micro-organsms and Primary industries.
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What is Geo-Thermal energy?
They are rocks heated by magma below the earths crust, the heat from the rocks produce steam to make the energy.
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Explain the benefits of geo-thermal energy to Iceland and mention some of its uses.
The energy is cheap to produce and doesn't emit greenhouse gases, its also renewable.
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Name 3 of Icelands spectacular scenery.
1)Basaltic cliffs
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Other cards in this set

Card 2

Front

Why is the inner core dense?

Back

Because its made of dense metals e.g. Iron.

Card 3

Front

Why is the inner core so hot?

Back

Preview of the front of card 3

Card 4

Front

Why do plates move?

Back

Preview of the front of card 4

Card 5

Front

How is a convection current caused?

Back

Preview of the front of card 5
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