Plate Tectonics Notes
Notes
http://vulcan.wr.usgs.gov/Imgs/Gif/PlateTectonics/Maps/map_plate_tectonics_world.gif
Plate Tectonics• Theory of Plate Tectonics – • explains the way that
continents separated into today’s land masses from Pangea
• The study of plate movement and the features that they affect.
http://www.pbs.org/wgbh/aso/tryit/tectonics/images/convectioncurrent.gif
Major Plates
The lithosphere is broken into 8 major plates
•Eurasian•African•Indo-Australian•Pacific•North American•South American•Antarctic•Nazca
Find the 7 Major Plates
When plates move they cause:
• Ocean basins – (anywhere on Earth covered by ocean water)
• Mountain Ranges
• Islands
• Volcanoes
• Earthquakes
Ocean Basin
5 Major Oceans-
Pacific OceanAtlantic OceanIndian OceanSouthern OceanArctic Ocean
All Ocean water
http://www.belmont.sd62.bc.ca/teacher/geology12/photos/tectonics/Plate%20Boundaries.jpg
What features do you think are formed at each of the following boundaries?
Types of Plate Boundaries
http://www.n-d-a.org/images/tectonic-plate-boundaries.jpg
Convergent Boundary
•Subduction – When the denser plate slides under the less dense plate•Volcanoes and frequent earthquakes occur at the boundaries
http://tasaclips.com/illustrations/Convergent_Boundary.jpg
Convergent Boundary
•Folded Mountains occur when 2 continental plates collide
http://tasaclips.com/illustrations/Convergent_Boundary.jpg
Divergent Boundaryc
• Plate move away from each other
• Form ocean basins
• Rift Valleys
http://2.bp.blogspot.com/_ejqMoM1Uaa4/Sh6ZE5I2tiI/AAAAAAAAADU/7jMa6rVEIXU/s320/db.jpg
Rift Valley formed
Transform Boundary
• Plates slide past one another
• causes earthquakes• It doesn’t destroy or
build Earth’s crust.• San Andreas Fault
is an example of this boundary.
http://www.nature.nps.gov/geology/usgsnps/pltec/SAtransform244x201.gif
SAN ANDREAS FAULT
Find the Plate Boundaries
Seismic Activity
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