PlateTectonics Revision
Plate boundary and what they mean, what the plate boundarys do to cause natural hazards.
- Created by: Mabel100699
- Created on: 22-06-14 12:01
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- Plate Tectonics Revision
- Plate Boundarys
- tensional, divergent or constructive
- Plates move apart
- conservative or transform
- Plates slide past each other
- tensional, divergent or constructive
- Tensional Margins
- 1. Slowly, plates move apart, and magma rises onto the Earths Crust.
- 2. When the magma reaches the surface, it cools and creates igneous rock.
- 3. The new rock builds up to be a volcano
- Destructive Boundary's
- This is where an oceanic and continental plate boundary move towards each other
- 1. The two plates move together and the oceanic plate moves underneath the continental plate because its denser. This point is called the subduction zone
- 2. As the oceanic plate is forced underneath the continental plate, it melts to form magma.
- This triggers Earthquakes
- 3. The magma collects to form a magma chamber and it rises up through cracks in the continental crust.
- 4. As pressure builds up, a volcanic eruption may occur.
- Plate Boundarys
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