Plate Tectonics Test
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Created by:
MrsGreen08 on May 23, 2011
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25 terms
Terms | Definitions |
|---|---|
 compression | a squeezing force |
| convection | the circular rising of warmer fluids and sinking of cooler fluids |
| molten | liquefied by heat |
| shearing | a sliding force |
| tension | a stretching force |
| parent | a radioactive isotope |
| basalt | igneous rock found in oceanic crust |
| granite | igneous rock found in continental crust |
| half-life | the time it takes for 1/2 of the radioactive parent to decay |
| daughter | the product of radioactive decay |
| trench | found at convergent boundaries where old crust is destroyed |
| convergent boundary | a fault line where two pieces of crust are colliding together |
| divergent boundary | a fault line where two pieces of crust are separating |
| ridge | found at divergent boundaries where new crust is created |
| transform boundary | a fault line where two pieces of crust are sliding past each other |
| magnetic striping | parallel areas of rock showing opposite polarity |
| hot spot | an area in the mantle that can melt the crust above it |
| oceanic plate | crust where the oceans are |
| continental plate | crust where the continents are |
| epicenter | the location on Earth's surface above the origin of an earthquake |
| P wave | a compression wave created by an earthquake |
| S wave | a longitudinal wave created by an earthquake |
| subduction zone | a destructive plate margin where ocean crust is forced beneath another plate |
| fault | cracks between Earth's tectonic plates |
| geology | the study of Earth |
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