Plate Boundaries

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Plate Boundaries

• By Miss Shrestha
• Miss Morris

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Plate Boundaries

• Sliding Boundaries
• Convergent Boundaries
• Divergent Boundaries

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Sliding Boundaries

• Plates sliding sideways against each other.
• Plates rubbing together form earthquakes.
• Example San Andreas Fault in California.

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Convergent Boundaries

• Plates pushing together.
• Plates pushing or colliding together form
  earthquake and volcanoes.

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Convergent Boundaries

• Plates push together to form mountains.
• Example Rocky and Himalayas Mountains.
• When continental and oceanic plates collide the
  thinner plate slides under the other plate. This
  is called subduction.

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Divergent Boundaries

• Plates pulling apart.
• Plates separate to form volcanoes and minor
  earthquakes.
• Example Mid Atlantic ridge

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Plate Boundaries

• 1. Click on the website below.
• 2. Click on the next view bottom at the lower
• right hand side to watch other plate
• movements.
• http//www.wwnorton.com/college/geo/egeo/flash/2_6
  .swf

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Mountain Building

• New mountains form when plates pull apart magma
  push out from below and the lava cools and turns
  to rock.

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Mountain Building

• When plates push together, one plate is pushed
  beneath the other one, and this creates
  mountains.
• Visit the following website
• http//www.classzone.com/books/earth_science/terc/
  content/visualizations/es1105/es1105page01.cfm?cha
  pter_novisualization

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Fault Block Mountains

• Form when masses of rock move upor down along a
  fault.

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Folded Mountains

• Form when two tectonic plates collide.

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Dome Mountains

• Form when the surface is lifted up by magma,
  forming a bulge.

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Resources

• http//vulcan.wr.usgs.gov/Glossary/PlateTectonics/
  Maps/map_plate_tectonics_world.html
• http//www.divediscover.whoi.edu/tectonics/tectoni
  cs-slide.html
• http//www.divediscover.whoi.edu/tectonics/tectoni
  cs-collide.html
• http//www.divediscover.whoi.edu/tectonics/tectoni
  cs-subduct.html
• http//www.divediscover.whoi.edu/tectonics/movemen
  ts.html
• http//epod.usra.edu/archive/epodviewer.php3?oid4
  5024
• http//www.mountain.org/education/subexplore/explo
  re02.cfm
• http//www.bigskycachers.com/indianhead.htm