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PLATE TECHTONICS

Is the process which earths outer shell splits into several parts
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CONVECTION CURRENTS

A current in a fluid that result from convection.
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SLAB PULL

Slab pull is the portion of motion of a tectonic plate that can be accounted for by its subduction. Plate motion is partly driven by the weight of cold, dense plates sinking into the mantle at trenches.
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RIDGE PUSH

Is the process where new crush pushes out new crust.
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DIVERGENT PLATE BOUNDARY

a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away.
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6

  • On land divergent plate boundaries form rift valleys
Photo by Etrusia UK
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Question 7

In the ocean divergent plate boundaries form rift valleys.

Photo by Kay Gaensler
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IN THE OCEAN DIVERGENT PLATE BOUNDARIES

  • divergent boundary occurs beneath oceanic lithosphere, the rising convection current below lifts the lithosphere producing a mid-ocean ridge. Extensional forces stretch the lithosphere and produce a deep fissure. When the fissure opens, pressure is reduced on the super-heated mantle material below. It responds by melting and the new magma flows into the fissure. The magma then solidifies and the process repeats itself.
Photo by Nick Fedele
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QUESTION 9

  • When ocean and continental crust coverage they form
  • Volcanic arc like St. Helens and my hood.
Photo by Andrew from Sydney
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QUESTION 10

  • When ocean and ocean crust converge they form volcanic arcs like island that make up Japan.
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SUBDUCTION ZONE

a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away f
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DEEP OCEAN TRENCH

A long narrow steep sided depression in the ocean bottom
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Transform plate boundary

Places where plates slide past each other are called transform boundaries. Since the plates on either side of a transform boundary are merely sliding past each other and not tearing or crunching each other, transform

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QUESTIONS 15 AND 16

  • When plates move along transform boundaries it causes
  • An example of a transform boundary is

Jicholas Tizzano