Plate Tectonics 1
The broken pieces of lithospere that are made to move around due to convection currents.
Tectonic Plates
The outermost layer of the Earth
Crust
New crust is created at this type of boundary.
divergent
The name of the supercontinent that existed hundreds of millions of years ago
Pangaea
The area where two tectonic plates meet
Plate Boundary
This often forms when a continental plate converges with a continental plate
Mountains
He developed the theory of continental drift
A boundary where two plates slide along each other and is the leading cause of earthquakes
Transform
This type of boundary is made when two plates pull apart from each other
divergent boundary
The force from this causes the tectonic plates to move
convection currents
Rift valleys occur at this type of plate boundry in the ocean and on land.
divergent
The movement of the warmer and cooler mantle creates pockets of circulation within the mantle called
convection currents
3 types of evidence that supported the theory of continental drift
Continental fit (puzzles), fossil evidence, matching geological features (rocks, mountains), paleoclimate evidence (glacial deposits, coal deposits)
This word describes the action of one plate moving below another plate into the mantle
subduction
What is superposition?
A principle that states that younger rocks lie above older rocks if the rock layers have not been disturbed