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vocab terms

TermDefinition
Continental Drift the gradual movement of the continents across the earth's surface.
Pangaea landmass of all the continents that broke apart 200 million years ago.
Magnetometer instrument that is used to measure magnetic forces.
Paleomagnetism branch of geophysics concerned with the magnetism in rocks that was induced by the earths magnetic fields.
Magnetic Reversal a change in the earth's magnetic fields which is resulting in the magnetic north being aligned with the geographic south. and the magnetic south being aligned with the geographic south.
isochron line on a map that connects points relating to the same time zone.
Seafloor Spreading the formation of new areas on the ocean floor. which is through magma coming up from mid ocean ridges.
Theory Of Plate Tectonics earth divided into small numbers of plates which float on and travel independently over the mantle and much of earth.
Divergent Boundry exist between two tectonic plates that are moving away from each other.
Rift Valley elongated depression with steep walls formed by downward displacement of earth's surface between fault systems.
Convergent Boundry boundary where to plates are moving towards each other.
Subduction downward and sideways movement of a plate of the earth's crust.
Transform Boundry when two plates slide against each other in a sideways motion.
Ridge Push proposed mechanism for plate motion in plate tectonics.
Slap pull the portion of motion of a tectonic plate that can be accounted for by its subduction.
Created by: EGardner2021
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