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s.s vocab world geog

vocabulary words

core earth's center
mantle lies above outer core has the most mass
magma liquid rock within earth
plate tectonics theory that earth's crust is divided into rigid plates that slowly move across the upper mantle
continental drift process in which earth's plates slowly move across the upper mantle
rift valleys places where the crust stretches until it breaks
abyssal plains areas of ocean floor where rocks gradually sink b/c there is no supporting heat below them; the world's largest and flattest regions.
cont. shelves areas where the surfaces extend under the shallow ocean water around the cont.
trench deep valley marking a collision of plates where one slides under the other
folds places where rocks were compressed into bends by colliding plates
faults places where rock masses have broken apart and are moving away from each other
weathering process in which rocks break and decay over time
sediment small particles of weathered rock
erosion movement of surface rock from one loc. to another by h2o wind and ice
glaciers thick masses of ice and flow down mnts like slow rivers
plateau elevated flatland that rises sharply above nearby land on at least1 side
alluvial fan fan shaped deposit of mud and gravel often found along mnts
delta accumilation of sediment at the mouth of a river
desalinization removing salt from ocean water
hydrologic cycle movement of h2o through the hydrosphere
tributary smaller streams/rivers that flows into a larger stream/river
drainage basin region drained by a river and its tributaries
estuairies semi- enclosed bodies of water, sea water and fresh water formed where a river meets an inlet of the sea
wetlands landscapes that are covered with h2o for at least part of the year
humus broken down plant and animal matter in soil
soil exhaustion a cond. in which soil has lost nutrients and becomes nearly useless for farming
reforestation replacing a forest
acid rain polluted rain that can damage trees and kill fish in lakes
fossil fuel formed in the remains of ancient plants and animals including coal, natural gas, and petroleum
petrochemical certain products made of oil
hydroelectric power electricity produced by moving h2o
geothermal energy heat of earth's interior
Created by: diva626