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21 Cards in this Set

  • Front
  • Back
The outer layer of the Earth. It is the Thinnest layer.Continental and Oceanic
earth's solid crust lies over a layer of melted material, called
On what does kinetic energy depend?
Speed and mass
P Waves
"Slinky ""push""
potential energy that depends on the height of an object
gravitational potential energy
The layer under the crust.
S Waves
"Slinky ""waved""
The inner layer of the Earth, mostly made of iron.
kinetic or potential energy associated with motion or postition of an object
mechanical energy
the earth has two kinds of crust, what are they,
continental crust and the oceanic crust
Continental Drift
The theory that states that continents move and have done so in the past.
Rift (rift valley), p 57
A place above sea level where the Earth's continental crust (part of the lithosphere)is being pulled apart. Typical features of a rift valley are a central linear downdropped fault segment (a graben), parallel extendional faulting, and rift-flank uplifts on either side. The axis of the rift area commonly contains volcanic rocks; Actiave volcanism is a part of many (but not all) active rift systems. Rifts are distinct from Mid-ocean ridges, where new oceanic crust is formed underwater.
Sea-Floor Spreading
The movementt of the plates of the sea floor. Magma is pushed up and fills in the space between the plates.
stored energy that results from the position or shape of an object
potential energy
energy that an object has due to its motion
kinetic energy
Evidence Supporting Continental Drift Theory
Fossils, mountain ranges, rock composition, sea-floor spreading
the abiltiy to do work or cause change
Convection Currents
The movement of liquid and gas in which hot. less dense materials rise and colder, denser materials sink.
a change in the shape or dimensions of a body, resulting from stress; strain.
The ________________ theory states that the continents ride atop rigid plates that move over the liquid part of the earth's mantle.
plate tectonics
asthenosphere, p 53
a section of the mantle located below the lithosphere. It separates the crust from the rest of the mantle. Because the rock in this area is easy to deform, it's the zone upon which the crustal plates slip and move.