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Vocab 1

TermDefinition
Geology The study of the origin, history, structure and processes that shape earth
Outer Core Only liquid layer
Inner Core The innermost part of the earth solid ball its dense
Mantle Between the crust and inner core it is the thickest layer
Crust outer layer thinnest layer
Plate Tectonics pieces of the crust fitting together like a jigsaw puzzle and are both oceanic and continental
Pangaea A super continent created by all the worlds present landmasses
Theory of Continental Drift The lateral movement of continents resulting from the motion of crustal plates
Divergent Boundaries place where plates spread apart
Convergent Boundaries place where plates meet
Transform Boundaries place where plates slide past each other
Weathering The breaking down of the lithosphere by the action of wind, ice, plants, animals, and chemical changes
Principle of Uniformity The processes that have changed the Earth in the past still exist: the same processes are at work changing our world now
Mechanical Weathering the process of the breaking down of rocks into smaller pieces
Chemical Weathering the process that alters a rocks mineral compostion
Syncline upward folds in rocks
Anticline downward folds in rocks
Fault where the crust splits
plateaus flat areas that have been pushed above sea level by forces within the earth
epicenter right above the focus most damage is caused
focus the point where the earthquake starts
seismic waves vibrations that travel out from the quakes focus in all directions
primary wave waves that can move through solids, liquids, and gases Also comes first
Secondary wave Waves that can move through only solids Comes second
Surface wave Slowest wave
Volcano Areas of the earths surface through which magma and volcanic gases pass
Lava Magma that flows onto earths surface
Vents An opening at the surface of the earth through which volcanic material passes
Magma chamber A body of molten rock that feeds the volcano
Magma Molten rock
Pyroclastic flow Produces enormous amounts of hot ash, dust, and gases
Viscosity (Viscous) Determined by if the magma is thick, runny, or sticky
Crater A large and bowl shaped cavity on the surface of the earth or in the ground
Caldera Is a caldron like or shaped feature usually formed by a collapse of land following a volcanic eruption
Rock cycle A series of rock changes from one form to another
Erosion The process which wind,water, ice and gravity transport soil and sediments from one location to another
Deposition The process in which material is laid down
igneous rock rocks formed by cooling of lava and magma
sedimentary rock rocks formed through deposition and sediment in layers
metamorphic rock rocks that was once another form by has changed to another under heat and pressure
extrusive igneous rock rock that forms as a result of volcanic activity at or near the earth's surface
intrusive igneous rock rock formed from the cooling and solidification of magma beneath the earth's surface
strata layers of rock
Stratafication the process in which sedimentary rocks are arranged in layers
index minerals used to estimate temperature, depth, and pressure a rock undergoes metamorphism
foliated metamorphism the texture of metamorphic rock in which the mineral grains are arranged in planes and bands
non-foliated metamorphism the texture of metamorphic rock in which the mineral grains are not arranged in planes and bands
Created by: Disneynerd21