earths interior

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core

the dense metallic center of the earth

asthenosphere

a plastic or flowing layer within the earths core

crust

the brittle rocky outer layer of the earth

magnetosphere

ther outer part of the earths magnetic field

mantle

the thick middle layer in the solid part of earth

nickel

a specific type of metal

observation

an act of nothing or occurence

lithosphere

the rigid layer of earth that includes the crust and the upper most mantel

two methods

mines and wells,earthquake waves

temp of geosphere

temp increases pressure increases

continental

less dense and much thinner than others has no water,granite,brittle,rocky

oceanic

made of dense,rocks,iron magnisium under water

rock cycle

An idealized cycle of processes undergone by rocks in the earth's crust

convection

Heat transfer in a gas or liquid by the circulation of currents from one region to another. b. Fluid motion caused by an external force such as gravity

therory of continental drift

Continental drift is the movement of the Earth's continents relative to each other

pangaea

a hypthetical super content that included all the land masses of Earth before the triassic.

alfred wegener

a German scientist, a geophysicist, and a meteorolotist.

seafloor spreading

occurs at mid-ocean ridges, where new oceanic crust is form through volcanic activity, and then moves away

mid-ocean ridge

a series of mountain ranges on the ocean floor.

rift

a narrow fissure in rock

vent

an opening that allows air, gas, or liquid out or into a confinded space.

theory of plate tectonics

the theory of Earth's outter layer is made up of plates witch have moved through out Earth's history

convergent boundary

they push together and cause mountains.

divergent boundary

places where plates are coming apart

transform boundary

is where two plates slide against each other in a side ways motion

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