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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 |