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vocab 4-1
vocab
Term | Definition |
---|---|
seismic waves | vibration that travel through earth carrying the energy released during an earthquake |
pressure | the force exerted on a surface divided by the total area over which the force is exerted |
crust | the layer of rock that forms earths outer surface |
mantle | the layer of hot solid material between earths crust and core |
lithosphere | a rigid layer made up of the upper most part of the mantle and crust |
asthenosphere | the soft layer of the mantle which the the lithosphere floats |
outer core | a layer of molten iron and nickel that surrounds the inner core of earth |
inner core | a dense sphere of solid iron and nickel at the center of earth |