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21 terms

Chapter 7 Earth Science

STUDY
PLAY
crust
the thin and solid outermost layer of the earth above the mantle
mantle
the layer of rock between the earth's crust and core
core
the central part of the earth below the mantle
lithosphere
the solid outer layer of the earth that consists of the crust and the rigid upper part of the mantle
asthenosphere
the soft layer of the mantle on which the tectonic plate move
mesophere
the strong, lower part of the mantle between the asthenosphere and the outer core
tectonic plate
a block of lithosphere that consists of the crust and the rigid, outer most part of the mantle
continental drift
the hypothesis that states that continents are formed as a single landmass, breakup, and drifted to their present location
sea-floor spreading
the process by which new oceanic lithosphere forms a magma rises toward the surface and solidifies
plate tectonics
the theory tat explains how large pieces of the earths outermost layer called tectonic plates move and change shape
convergent boundary
the boundary between tectonic plates that are sliding past each other horizontally
divergent boundary
the boundary between 2 tectonic plates that are moving away from each other
transform boundary
the boundary between tectonic plates that are sliding past each other horizontally
compression
stress that occurs when forces at to squeeze an object
tension
stress that occurs when forces act to stretch an object
folding
the bending of rock layers due to stress
anticline
upward arching fold
syncline
downward arching fold
monocline
both ends are horizontal
fault
a break in a body of rock along which are block slides relative to another
uplift
the rising of regions of the earth's crust to higher elevations