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Rocks

TermDefinition
crust the outermost layer of Earth
erosion the wearing away and removal of rock
igneous rock any rock formed by the cooling of magma or lava
inner core the innermost layer of Earth
lava hot liquid rock located above the Earth's surface
magma hot liquid rock located below the Earth's surface
mantle the thickest layer of Earth, between the core and the crust
metamorphic rock any rock that has been changed by intense heat and pressure
outer core the layer of Earth that lies between the mantle and inner core
sediment small rock fragments
sedimentary rock any rock formed when sediment is compacted or cemented
cementation gluing together of sediments
compaction the squeezing together of sediments from the overhead layers
melting solid to liquid
pressure force applied over a certain area
the rock cycle changes that turn one rock type into another
weathering the breakdown of rocks into small grains
cooling liquid to solid
the deeper you go into earth the more heat and pressure there is
examples of igneous rocks granite and obsidian
examples of sedimentary rocks limestone and sandstone
examples of metamorphic rocks marble and slate
convergent boundary plates move towards each other
divergent boundary plates move away from each other
transform boundary plates move past each other
subduction zone where one plate moves underneath another plate
geological features from plate tectonics mouontain ranges, deep sea trench, mid ocean ridge
plate movement causes earthquakes, tsunamis and volcanic eruptions
cause of convection currents heat from the earths core
convection currents cause plate movement
oceanic crust denser and thinner
continental crust less dense and thicker
seafloor spreading creation of new sea floor
the ring of fire
Created by: justineforrest
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