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PLATE BOUNDARIES . The plates are moved by the convection currents in the asthenosphere. The plates are part of the lithosphere which is what is moving into one another, away, and sliding. . Boundary Movement . Come together. separate. Slide. Divergent Boundaries . DIVIDE

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Plate boundaries


Boundary movement
Boundary Movement asthenosphere.

Come

together

separate

Slide


Divergent boundaries
Divergent Boundaries asthenosphere.

  • DIVIDE

  • Physical Features:

    • Ridges

    • New crust

  • Ex: Mid-Atlantic Ridge


Transform boundaries
Transform Boundaries asthenosphere.

  • They slide

  • Physical features:

    • Transform fault

  • Ex: San Andres Fault


Convergent boundaries
Convergent Boundaries asthenosphere.

  • Come together

  • Thee physical features formed depend on the type of crusts that are colliding

  • Subduction Zones-

    • Continental-Oceanic

    • Oceanic- Oceanic

  • Collisional-

    • Continental-Continental


3 types of convergent boundaries
3 types of Convergent Boundaries asthenosphere.

  • There are 3 types

    • It depends on which kind of plate (oceanic or continental)

  • CONTINENTAL plate – CONTINENTAL plate

    • Forms folded mountains (like Mt. Everest)

  • CONTINENTAL plate – OCEANIC plate

    • The oceanic will go under the continental

    • WHY???

      • Oceanic is more dense

  • OCEANIC plate –OCEANIC plate

    • Same movement as continental – oceanic


Subduction zone
Subduction Zone asthenosphere.

  • Continental-Oceanic and Oceanic-Oceanic boundaries form subduction zones

  • Subduction Zones:

    • When the more dense plate goes under the less dense plate

  • Physical Features:

    • TRENCHES

    • Mountains/volcanoes on the less dense plate

  • Ex: Tonga Trench


Plate boundaries

Continental asthenosphere.

Oceanic

Oceanic

Oceanic

Continental

Continental


Youtube
YouTube asthenosphere.

http://www.youtube.com/watch?v=hhxjAAnwNKM