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Plate Boundaries

TermDefinition
Tectonic Plates The theory that Earth's outer crust is divided into several plates
What boundary creates Mountain Ranges Created by convergent boundaries.
What is a Subduction Zone When two plates slide under or over one another.
Why does an Earthquake occur. Occurs when the pressure built up along a fault line becomes so great that the rocks on either side of the fault suddenly rip apart.
What is a Plate Boundary Where 2 plates meet. Volcanic eruptions and earthquakes most commonly happen here.
What happens in a Transform Boundary Plates slip sideways past each other creating earthquakes. Crust is neither created or destroyed.
Convergent Boundary Two crusts collide and push against each other. This pressure causes both plates to rise
Divergent Boundary Two oceanic crusts diverge and create a mid-ocean ridge (mountains under the ocean). New crust is created.
What boundary forma a Mid-Atlantic Ridge Created by divergent boundaries.
Converging Colliding or coming together
Diverging Dividing or moving apart
What is a Volcano A cone shaped mountain or hill which usually has a crater or depression at the summit.
Who thought of the theory of Sea Floor Spreading and what does it do. Harry Hess discovered sea floor spreading. Magma rises from gaps in the crust and when it hardens it forms new crust.
Ring of Fire A long chain of volcanoes that surround the Pacific Ocean. Site of frequent earthquakes and volcanic eruptions. Created by plate boundaries
What are Convection Currents Transfers of energy in the mantle.
What created the Cascades Volcanoes Created by converging continental oceanic crusts
What created Volcanic Islands Created by converging oceanic oceanic crusts
What created the Rift Valley in Africa Created by a divergent boundary.
Transforming Sliding past each other
Created by: camerynedel
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