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Science Earth Layers
Earth'sLayers and Plates
Term | Definition |
---|---|
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 |