Describe the earth's crust, mantle, outer core, inner core.
crust- 6-80km thick, mantle- 3000ºC and 2000km thick, outer core- nickel, iron and molten liquid, 3500km thick, inner core- solid, 1200km thick
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Describe plate movements at a destructive plate margin.
At a destructive plate margin one plate slides beneath another as they collide, a process known as subduction. the bottom plate crumples creating new mountains.
2 of 6
Describe the plate movements at a constructive plate margin.
At a constructive plate margin the plates are moving apart. Molten rocks from the mantle below spread out and harden forming a ridge of new rock.
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Describe the plate movements at a conservative plate margin.
At a conservative plate margin the plates slide past each other. pressure builds up until they jerk causing earthquakes..
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describe the plate movements at a collision plate margin.
A collision plate margin is where two plates collide and are crushed against each other. they are pushed upwards, forming new mountains.
5 of 6
Give two differences between the oceanic and continental plates.
1. the oceanic plates are younger than the continental plates
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Other cards in this set
Card 2
Front
Describe plate movements at a destructive plate margin.
Back
At a destructive plate margin one plate slides beneath another as they collide, a process known as subduction. the bottom plate crumples creating new mountains.
Card 3
Front
Describe the plate movements at a constructive plate margin.
Back
Card 4
Front
Describe the plate movements at a conservative plate margin.
Back
Card 5
Front
describe the plate movements at a collision plate margin.
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