chpt3 Flashcards
earths center
core
the zone that has most of earths mass mostly made of nickel and iron
mantle
liquid rock within earth
magma
earth is divided into rigid plates.
plate tectonics
earths plates slowly move across the upper mantle
continental drift
the crust streaches until it breaks
rift valleys
rocks gradually sick no supporting heat below them flattest and smoothest regions
abyssal plaims
continental surfaces extend under the shallow ocean water
continental shelves
deep valley under marking a collison of plates
trench
rocks have been compressed into bends by colliding plates
folds
rock masses have been broken apart and are moving away from eachother
faults
the process by which rocks break and decay over time
weathering
small particles of weathered rocks
sediment
movement of surface material from one location to another
erosion
thick masses of ice
glaciers