Flashcards
Plate Boundaries
Cards in this deck (9)
- 1DESTRUCTIVE PLATE BOUNDARIESOceanic and Continental plates
- 2DESTRUCTIVE PLATE BOUNDARIESNazca plate and South America plate
- 3DESTRUCTIVE PLATE BOUNDARIES (HOW)Oceanic plate and Continental plate push against each other due to convection currents
Oc. plate subducts, the friction between the plates cause oc. crust to melt and causing earthquakes
Subduction creates Peru-Chile Oceanic trench
Fold mountains created (the Andes)
Volcanic eruptions from cracks in fold mountains - 4How thick is the Oceanic plate?6-10km thick and made of basalt (dense)
- 5How thick is the Continental plate?Up to 70km thick and made of granite (less dense)
- 6CONSTRUCTIVE PLATE BOUNDARIESBoth Continental plates
- 7CONSTRUCTIVE PLATE BOUNDARIES (HOW)Convection currents cause the continental plate to stretch, crust gets thinner as it's stretches created cracks and riffs (fill up w/ water)
New oceanic plate created in middle, called Mid Atlantic ridge - 8CONSERVATIVE PLATE BOUNDARIESPacific plate and North American plate
- 9CONSERVATIVE PLATE BOUNDARIES (HOW)No subductions therefore more destructive creating shallow earthquakes
Grind against each other creating lots of earthquakes
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- Flashcards on Plate Boundaries, created by anna97 on 11/05/2014.
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- anna97
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