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Unit 3 Vocab ChrisS
Plate tectonics
Term | Definition |
---|---|
Asthenosphere | highly vicious, mechanically weak and ductile region of the upper mantle of the earth |
subduction | the sideways and downward movement of the edge of a plate of the earths crust |
seafloor spreading | the formation of new areas of oceanic crust. |
mantle convection | very slow creeping motion of earths solid silicate mantle caused by convection currents |
ridge push | a proposed driving force for plate motion in plate tectonics |
slab pull | part of the motion of a tectonic plate caused by its subduction |
lava | hot molten or semifluid rock erupted from a volcano |
magma | |
tectonic plate | |
theory of continental drift | |
Convergent boundary | |
divergent boundary | |
transform boundary | |
hot spot | |
epic center | |
focus | |
pangaea | |
geohazard | |
reverse fault | |
strike slip fault | |
normal fault | |
compression | |
tension | |
shearing | |
felsic | |
mafic |