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Science Earth Layers

Earth'sLayers and Plates

TermDefinition
Crust the thin rocky surface that includes the continents and the ocean floor.
Mantle the thickest layer. The rock material is solid, but it can flow like a liquid.
Outer core made up of mostly iron and nickel. It is liquid
Inner core made up of mostly iron and nickel. It is solid.
Heat and pressure increase with as you go deeper beneath the surface.
What causes movement in the crust The flowing mantle
The moving rock of the mantle pushes against the crust causing the crust to break into plates.
There are three types of plate boundaries or faults convergent, divergent, and transform.
Convergent Plates collide in convergent movement (compression).
Convergent Plates Creates folded mountains, volcanoes, ocean trenches
Divergent Plates pull apart in divergent movement (tension).
Divergent Plates Creates mid-ocean ridges in oceans.
Transform Plates slide by each other in sliding movement (shear).
Lava What magma is called when reaches the surface
Crust This is the part of the Earth we live on
temperatures and pressures increase as we move from the crust toward the inner core of the Earth.
The crust is very ____ compared to the other three layers thin
Plates Large continent-sized blocks are called
Transform plates grind against each other causing earthquakes.
Ocean crust Thin layer of crust found below the ocean.
Continental crust Thick layer of crust that includes the continents.
Hydrosphere is earth's water supply
Lithosphere the land part of the earth
Atmosphere the gases that surround the earth and help protect us from the sun
Created by: kniewoehner