The rigid outer part of the earth, consisting of the crust and upper mantle.

The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.

The relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.

The relatively thin part of the earth's crust that underlies the ocean basins. It is geologically young compared with the continental crust and consists of basaltic rock overlain by sediments.

Transform Fault Boundary

Is a type of fault whose relative motion is predominantly horizontal, in either a sinistral (left lateral) or dextral (right lateral) direction.

Oceanic-Oceanic Convergent Boundary

A subduction zone forms and a curved volcanic mountain chain forms above the subducting plate.

Oceanic-Continental Convergent Boundary

Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called a subduction zone.

Continental-Continental Convergent Boundary

A collision between two plates crunches and folds the rock at the boundary, lifting it up and leading to the formation of mountains and mountain ranges.

Oceanic-Oceanic Divergent Boundary

As plates pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge.

Continental-Continental Divergent Boundary

A spreading apart of the surface, which is subsequently further deepened by the forces of erosion.

Is a region of the Earth's crust where tectonic plates meet.

A current in a fluid that results from convection.

A long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading.

A large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface between nearly parallel faults or fault systems.

A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.

A long, narrow ditch that's under ocean waters dividing two plates.

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Plate Boundaries RS

Term	Definition
Lithosphere	The rigid outer part of the earth, consisting of the crust and upper mantle.
Asthenosphere	The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
Continental Crust	The relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.
Oceanic Crust	The relatively thin part of the earth's crust that underlies the ocean basins. It is geologically young compared with the continental crust and consists of basaltic rock overlain by sediments.
Transform Fault Boundary	Is a type of fault whose relative motion is predominantly horizontal, in either a sinistral (left lateral) or dextral (right lateral) direction.
Oceanic-Oceanic Convergent Boundary	A subduction zone forms and a curved volcanic mountain chain forms above the subducting plate.
Oceanic-Continental Convergent Boundary	Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called a subduction zone.
Continental-Continental Convergent Boundary	A collision between two plates crunches and folds the rock at the boundary, lifting it up and leading to the formation of mountains and mountain ranges.
Oceanic-Oceanic Divergent Boundary	As plates pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge.
Continental-Continental Divergent Boundary	A spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
Subduction Zone	Is a region of the Earth's crust where tectonic plates meet.
Convection Currents	A current in a fluid that results from convection.
Mid-Ocean Ridge	A long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading.
Rift Valley	A large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface between nearly parallel faults or fault systems.
Volcano	A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
Trench	A long, narrow ditch that's under ocean waters dividing two plates.

Created by: robbie1979

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