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8th Science U7L2

DefinitionTerm
The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle. lithosphere
The soft layer of the mantle on which the tectonic plates move. asthenosphere
A layer of Earth’s surface, lying just below the crust and above the inner core. mantle
A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle. tectonic plate
The bending, tilting, and breaking of Earth’s crust; the change in the shape of rock in response to stress. deformation
The boundary between tectonic plates that are colliding. convergent boundary
The boundary between two tectonic plates that are moving away from each other. divergent boundary
The boundary between tectonic plates that are sliding past each other horizontally. transform boundary
the type of stress that occurs when an object is squeezed as when two tectonic plates collide. compression
the amount of force per unit area that is put on a given material. stress
The surface along which rocks break and slide past each other. fault
The name of the scientist credited for developing the Theory of Continental Drift Alfred Wegener
The theory that the today's continents were once part of a single landmass. Theory of Continental Drift
Theory that developed from the Continental Drift Theory that the Earth's surface is made up of giant moving slabs. Theory of Plate Tectonics
The process where new sea floor is formed. seafloor spreading
A change in the Earth's magnetic poles that occur roughly every 25,000 years. magnetic reversal
The process where one tectonic plate is "pulled" under another plate. subduction
Created by: ashaver
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