ethquake flash cards
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Created by:
Preston1999 on November 30, 2011
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20 terms
Terms | Definitions |
|---|---|
 aftershock | An earthquake that occurs after a larger earthquake in the same area. |
| Continental Drift | The hypothesis that continents moved slowly to their current locations. |
| Convection Current | Cycle of heating, rising, cooling, sinking that makes plates move. |
| convergent boundaries | Area where two plates move towards each other. |
| divergent boundaries | Area where two plates move away from each other. |
| earthquake | The shaking that results from the movement of rock beneath Earth's surface. |
| epicenter | The point on Earth's surface directly above an earthquake's focus. |
| fault | A break in the Earth's crust where slabs of rock slip past each other. |
| inner core | solid, dense, mostly iron and some nickel |
| lithosphere | ocean crust, continental crust, rigid upper mantle |
| mantle | layer of molten rock that makes up most of the interior of the Earth |
| outer core | liquid, mostly iron |
| Pangaea | Single large land mass made up of all continents connected that broke apart 200 million years ago. |
| Plate Tectonics | Theory that crust and upper mantle move on around on the upper mantle. |
| plates | Sections of Earth's lithosphere that is composed of the crust and upper mantle. |
| Richter Scale | A scale that rates the seismic waves as measured by a particular type of mechanical seismograph. |
| seismograph | A machine used to record earthquake events. |
| Seismologist | A scientist that studies earthquakes. |
| transform boundaries | Area where two plates are moving past each other. |
| Tsunami | Large waves that are formed when water is displaced by earthquakes. |
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