Download Plate Tectonics

Test Review
• The hypothesis that continents slowly move across Earth’s surface
• Landforms – mountain ranges that match up along different
coast lines
• Fossils – fossils of the same organism have been found on
different continents
• Climate – Climate has not changed over time
• Pangaea
• Because Wegener could not provide a mechanism for HOW the
continents moved
• He could not explain why mountains formed in the middle of
continents
• Rift valleys
• Deep-sea trenches
• Deep-sea trenches
• Island arcs
• Subducting plate
• Trench
• Volcanic mountain range
• Oceanic subducting plate
• Folded mountain range
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Trenches
Faults
Fracture zones
Earthquakes
• Divergent – created
• Convergent – destroyed
• Transform – neither created nor destroyed
• Transform –
• San Andreas Fault
• Continental-Continental Divergent –
• East African Rift Valley
• Ocean-Ocean Divergent–
• Mid-Atlantic Ridge
• Ocean-Ocean Convergent –
• Mariana Trench
• Continental-Continental Convergent –
• Andes Mountains
• Convection currents in the mantle
• Slab pull
• Ridge push
• The mid-ocean ridge
• It’s where sea-floor spreading occurs
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Crust
Mantle
Outer Core
Inner Core
• Crust
• Mantle
• Antarctic
• The Pacific is shrinking because of the large deep ocean
trenches.
• The Atlantic is growing because of the large Mid-Ocean Ridge.
• Ring of Fire
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Shield
Cinder cone
Composite
Hot spots
• Convergent boundaries