Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
UNIT 3 Vocab Aidan B
Plate tectonics
| Term | Definition |
|---|---|
| Asthenosphere | |
| Subduction | Process by which one tectonic plate slips beneath another tectonic plate. |
| Seafloor spreading | The hypothesis that new ocean crust is formed at mid-ocean ridges and destroyed t deep-sea trenches;occurs in a continuous cycle of magma intrusion and spreading |
| Mantle convection | |
| Ridge push | Tectonic process associated with convection currents in Earth's mantle that occurs when the weight of an elevated ridge pushes an oceanic plate toward a subduction zone |
| Slab pull | Tectonic process associated with convection currents in Earth's mantle that occurs as the weight of the subducting plate pulls the trailing lithosphere into a subduction zone |
| Lava | Magma that has flowed out onto the surface |
| Magma | |
| Tectonic plate | Huge pieces of Earth's crust that covers its surface and fit together at their edges. |
| Theory of continental drift | Wegener's hypothesis that Earth's continents were joined as a single landmass, called Pangaea, that broke apart about 200 mya and slowly moved to their present positions. |
| Convergent boundary | place where two tectonic plates are moving toward each other; is associated with trenches, islands arcs, and folded mountains. |
| Divergent boundary | Place where two of Earth's tectonic plates are moving apart; is associated with volcanism, earthquakes, and high heat flow, and is found primarily on the seafloor |
| Transform boundary | Place where two tectonic plates slide horizontall past each another; is characterized by long faults and shallow earthquakes. |
| Hot spot | Unusually hot area in Earth's mantle where high-temperature plumes of mantle material rise toward the surface. |
| Epicenter (in regards to earthquakes) | Point on Earth's surface directly above the foxus of an earthquake |
| Focus (in regards to earthquakes) | Point of the intial fault rupture where an earthquake originates that usually lies at least several kilometers beneath Earth's surface |
| Pangaea | Ancient landmass made up of all the continents that began to break apart about 200 mya. |
| Geohazard | |
| Reverse fault | |
| Strike-slip fault | |
| Normal fault | |
| Compression | |
| Tension | |
| Shearing | |
| Felsic | |
| Mafic |
Created by:
aidanbrannan
Popular Earth Science sets