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25 Cards in this Set

  • Front
  • Back
Subduction zone
the location were one crust goes under another.
Rift Valley
A low lying area that lays between mountaiun ranges or highlands that occur because of fault movements.
Oceanic Ridge
Underwater mountain ranges
Convection curents
is the movement of warmer, less dense magma below denser cold magma.
Convection
is the movementof heat from the rising of warm, less dense molecules through denser cold ones.
Crust
is the outermost area of the earth.
Mantle
is made up of liquidy rock where convection currents occur.
Core
is the inner most layer of the earth that is made of iron
Pangaea
the name of the original land mass on earth, it was the super continent.
Asthenosphere
liquid layer of the earth above the mantle.
Lithosphere
the oceanic and continental crusts float upon this layer of solid rock that flows.
Convergent boundary
2 plates moving toward eachother.
Divergent boundary
2 plates sliding or grinding past eachother.
trench
long steep valley on the ocean floor.
fault
a long the boundaries of 2 plate boundaries
Island chains
several islands lovated next to eachother.
wich way does divergent go?
<--- --->
wich way does convergent go?
---> <---
wich way does transform go?
up and down.
who was responsible for the seafloor spreading theory?
Harry Hess
What was the seafloor spreading theory?
It started that through divergent boundary process the amount of ocean floor is increasing. Proven by examining magnetism of the ocean floor.
List different types of evidence used to prove the continental drift theory.
-Mesosaurus fossils on 2 different continents.
-Appalachian Mountains are of similar age & structure as mountains in greenland & northern europe.
-Evidence of glaciers in south africa & south america, which are now tropical.
what are 2 locations of Each of the tree convergent boundary types.
oceanic-oceanic--> Hawaii, Galapagos, Aleutian

oceanic-continental--> Andes, Aleution

Continental-continental--> Himalayans, Alps
What are 2 places on earth with a divergent plate boundary?
Mid-Atlantic Ridge, Red Sea
What is the most prominent place on earth with a transform boundary?
San Andreas Fault