Geography

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  • Created by: Waffle21
  • Created on: 24-04-16 15:28
Continental crust
Forms the land. Is about 30-50km thick.
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Oceanic crust
This is much thinner. Usually about 5-8km.
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Structure of the earth
Upper mantle - Lower mantle - Outer core - Inner core
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Radioactive decay
Some elements are naturally unstable and radioactive. Atoms of these elements release particles from their nuclei and give off heat.
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Pangea
The supercontinent. The idea that all of the continents fit together as one supercontinent
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Conservative boundaries
These types of plates slide past each other. Friction between them causes earthquakes.
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Constructive boundaries
Plates move away from each other and magma rises up in between the gap, solidifies and forms new land.
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Destructive boundaries
These plates push towards each other and oceanic plates are subducted. As it sinks it melts and makes magma called andesite.
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Long term planning for earthquakes
A damper for the roof reduces building sway. Cross bracing. Shock absorbers. A strong steel frame. Strong double glazing. Very deep foundations.
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Other cards in this set

Card 2

Front

This is much thinner. Usually about 5-8km.

Back

Oceanic crust

Card 3

Front

Upper mantle - Lower mantle - Outer core - Inner core

Back

Preview of the back of card 3

Card 4

Front

Some elements are naturally unstable and radioactive. Atoms of these elements release particles from their nuclei and give off heat.

Back

Preview of the back of card 4

Card 5

Front

The supercontinent. The idea that all of the continents fit together as one supercontinent

Back

Preview of the back of card 5
View more cards

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