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vocabulary of earth

QuestionAnswer
the dense center of the earth made of solid and molten iron and nickel Core
the layer of earth that surrounds the core; made of both molten magma and solid rock mantle
the thin , solid rocky outermost layer of earth Crust
the process of earth materials separating and sorting by density resulting in a layer structure with the densest material (Fe & Ni) setting in the core Differentiation
a large section of earth's crust that moves and carries everything on it tectonic plate
a stationary, high temperature area of melting within the earth's mantle that can last for several millions of years where super heated mantle magma rises towards the surface Hotspot
a long, narrow rip or opening , made made by the stretching, pulling apart of the earth's crust through which mantle magma reaches the surface adding new crust to the edge of a tectonic plate Rift valley
the theory that oceans widen (open up) and continent are pushed apart as new crust is formed at mid-ocean ridges seafloor spreading
the theory that the earth's surface is made of large sections of crust that move and interact with each other Plate tectonic
the theory that the major landmasses of the earth were once part of one large single super continent that broke apart 200 millions years ago Continental Drift
a long underwater mountain range that is split by a rift valley where mantle magma rises and forms new oceanic crust Mid Oceanic Ridges
the circular flow of magma within the molten part of the mantle as it heats up and cools down Convection current
a type of vibrating or shaking activity produced by the movement of earth's tectonic plate Seismic wave
a record of the earth's magnetic field preserved by the alignment of magnetic minerals on the rocks of earth's crust at the time that the rocks were formed at mid-ocean ridges Paleomagnetic
he point inside the earth where rock first, moves starting an earthquake Focus
the point on the earth's surface directly over the focus of an earquake Epicenter
the scale used to measure the magnitude or strength of an earthquake Richter scale
the process of physically changing the earth's crust as a result of tectonic forces Deformation
the ability of a substance to resist folwing Viscosity
a break or fracture in the earth's crust caused by tectonicforces Fault
a scientific that studies the behaviors and characteristics of earhquake Seismologist
the amount of time that passes between the arrival of the first P wave and the first s wave Lag time
a measure of the amount of energy released during an earthquake Magnitude
the edges of the continents below sea level that represent the shallowest parts of the oceans Continental margin
an area on the earth's surface where the edges of tectonic plates are interacting Plate boundary
the geologic process by which one tectonic plate is forced downward into the mantle under another tectonic plate Subduction
an area of high subduction activity and frequent volcanic eruptions surrounding the pacific plate Ring of fire
a renewable energy source that originates from the earth's own internal heat Geothermal energy
forces generate from within the earth that result in uplift, movement, or deformation of the earth's Tectonic forces
an arcing chain of volcanic islands or volcanic mountains formed by the subduction of an oceanic plate into the mantle under another tectonic plate Volcanic Arc
Created by: ggonza