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Lauren Earthquake
Earthquake Notes
| Question | Answer |
|---|---|
| Earthquake | Sudden shaking, tremlbling or rolling of earths crust |
| Foreshock | Earthquake before main quake and less severe |
| Aftershock | Earthquake after main quake and less severe |
| Crust | Outer shell of earth on top of mantle |
| Inner Core | Inner solid sphere surrounded by liquid and made of very dense material |
| Mantle | Layer of planet made of semimolten rock |
| Outer core | Layer of planet made of liquid iron and nickel beneath mantle |
| Magma | Semi molten rock found in the mantle below the crust |
| Geologist | Scientist that studies + what it is made of |
| Seismology | Study of earthquakes |
| Seismologist | Scientist that studies earthquakes |
| Boundary | Place where 2 plates come together. most quakes occur at boundaries. |
| Subduction | When one plate pushes under another plate |
| Plate Techtonics | theory of how plates move |
| Converge | The movement of plates towards each other |
| Diverge | movement of plates away from each other |
| Fault | crack in earth's crust where movement has occured |
| Lateral plate movement | movement of plates as they slide sideways past each other |
| Seismograph | detects and records quake waves |
| Primary waves | quake waves that are the first ones to reach the seismograph |
| Secondary waves | waves that are 2nd to reach the seismograph |
| Surface waves | last quake to reach the seismograph |
| Mercalli scale | scale for measuring strength of quake. uses Roman numerals to describe effects and damage of quake |
| Richter scale | scale for measuring |
| Magnitude | total amount of energy released from quake |
| Seismic waves | waves made during quake |
| Focus | source of quake within earth |
| Epicenter | place on earth's surface directly above focus |
| Tsunami | giant seawave, up to 100 feet tall, often made when earthquake starts under ocean |