shake, rattle, & roll!. plate tectonics asthenosphere lithosphere mantle continental crust ...
TRANSCRIPT
Plate tectonics Asthenosphere Lithosphere Mantle Continental Crust Oceanic Crust Pangaea Convergent Divergent Transform Subduction Collision Convection
Continental drift Sea floor spreading Continental rift Earthquake Tsunami Volcanic activity Oceanic trench Oceanic ridge Rift valley Mountain building Island arc
Key Vocabulary
Plate Tectonicsa scientific theory that describes the large scale motions of the Earth's plates which make up the lithosphere. These plates rest on the asthenosphere.
Plate Movement
It is believed that tectonic plates are moved by several different forces:
◦ Rotation of the earth◦ Tidal forces of sun &
moon◦ Gravitational pull◦ Convection cell
Types of Plate Motion Convergent Divergent Transform
Tectonic Plate Motion
Convergent Boundaries-Where two tectonic plates come together
There are 3 types of convergent boundaries, all 3 cause earthquakes. Oceanic>Continental
◦ Volcanoes◦ Oceanic trenches
Oceanic>Oceanic◦ Tsunamis ◦ Volcanoes◦ Island arcs
Continental>Continental◦ Mountain building
Andes Mountains-The main cause of the rise of the Andes is the compression of western rim of the South American Plate due to the subduction of the Nazca Plate and the Antarctic Plate.
There are 2 types of divergent boundaries. Sea Floor Spreading
◦ Oceanic Ridges Continental Rift
◦ Rift Vallies
Divergent Boundaries-where two tectonic plates pull apart
three plates are pulling away from one another: the Arabian Plate, and the two parts of the African Plate(the Nubian and
the Somalian)
Rifting earth of Ethiopia
A transform boundary is just that, a transform boundary. Transform boundaries can have jagged
edges that get caught on each other, when this happens massive pressure builds up which releases in an:◦Earthquake.
Transform Boundaries-where two tectonic plates grind past each other.