The Restless Earth, Summary
- Created by: kdmmad
- Created on: 05-05-16 08:33
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- Restless Earth
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- Structure of the earth
- The earth is made up of 4 layers; the crust, the mantle, the outer core and the inner core.
- Convection currents inside the Mantle move melted rock to the Crust/the earths surface.
- The convection currents move the tectonic plates, this creates different plate margins.
- A Constructive Plate margin is when two oceanic plates pull apart from each other, this creates a crack in the mantle where magma pushes up creating new land.
- An example of this is the mid Atlantic ridge.
- Destructive Pate margins are when an oceanic plate and a continental plate are being forced into one another. The continental plate pushes the oceanic plate down where the plate is melted
- An example of this is the Nazca Plate and the south American Plate
- A Conservative Plate margin is when two plates slide against each other at different speeds.
- An example of this is the san andreas falt.
- A Constructive Plate margin is when two oceanic plates pull apart from each other, this creates a crack in the mantle where magma pushes up creating new land.
- The convection currents move the tectonic plates, this creates different plate margins.
- The Earths Crust is made up of tectonic plates; oceanic plates and Continental
- Continental Plates are older and cannot sink or be destroyed.
- Oceanic Plates are newer and can sink and be destroyed
- tectonic Plates are constantly moving
- Volcanoes
- Composite Volcano
- A Composite volcano normally forms near a destructive Plate boundary, it forms when layers of magma and ash build up and create a dome shape.
- An example of this is
- A Composite volcano normally forms near a destructive Plate boundary, it forms when layers of magma and ash build up and create a dome shape.
- Shield Volcano
- Composite Volcano
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