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Chapter 4

TermDefinition
CORE EARTH'SCENTER, WHERE PRESSURE AND TEMP. ARE VERY HIGH
MANTLE THE SECTION OF EARTH'S INTERIOR THAT LIES ABOVE THE OUTER CORE AND HAS THE MOST MASS
MAGMA molten material beneath or within the earth's crust, from which igneous rock is formed
PLATE TECTONICS a theory of global tectonics in which the lithosphere is divided into a number of crustal plates
CONTINENTAL DRIFT the lateral movement of continents resulting from the motion of crustal plates.
RIFT VALLEYS a subsea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwellings that accompany seafloor spreading
ABYSSAL PLAINS a large area of extremely flat or gently sloping ocean floor just offshore from a continent
CONTINENTAL SHELVES the sea bed surrounding a continent at depths of up to about 200 metres
TRENCH a system of such excavations, with their embankments
FOLDS to bend over upon itself
FAULTS a defect or imperfection; flaw; failing
WEATHERING the state of the atmosphere with respect to wind, temperature, cloudiness, moisture, pressure
SEDIMENT the matter that settles to the bottom of a liquid; lees; dregs
EROSION the act or state of eroding; state of being eroded
GLACIERS an extended mass of ice formed from snow falling and accumulating over the years and moving very slowly
DELTA the fourth letter of the greek alphabet
Created by: javojames
 

 



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