| Question |
 |
|
| Answer |
|
|
| earthquake |
shaking and rumbling of the earth |
| Richter Scale |
used to assign quake magnitudes |
| faults |
fractures in the earth's crust |
| hypocenter |
1st movement in fault |
| epicenter |
directly above the hypocenter |
| seismographs |
instrument measuring vibration waves |
| Primary Wave |
Wave which causes rock particles to move back and forth in the same direction the wave is traveling, the first wave to pass through after an earthquake |
| Secondary WAve |
Wave which causes rock particles to move at right angles to the direction of wave travel, the second wave to pass through the earth after an earthquake |
| Surface Wave |
Wave which causes rock particles to move in a backward rolling and side to side swaying motion, this is the most destructive earthquake wave |
| Normal Fault |
occurs when the two sides of a fault pull apart. The rocks on one side drop down lower than the other side. This is the result of two divergent boundaries undergoing tension. The hanging wall moves downward. |
| Reverse Fault |
a geological fault in which the upper side appears to have been pushed upward by compression |
| Strike Slip Fault |
Break in rock caused by shear forces where rocks slide past each other without much vertical movement |
| Tension Forces |
make rocks move along faults by causing rocks to be pulled apart, causing a normal fault |
| Seismic Wave |
A wave of energy that travels through the Earth and away from an Earthquake in all directons. |
| Seismologist |
a scientist who studies earthquakes |
| Shadow Zone |
area where no seismic waves are detected |
| Inner Core |
a dense sphere of solid iron and nickel in the center of the Earth |
| Outer Core |
a layer of molten iron and nickel that surrounds the inner core of the Earth |
| Mantle |
the layer of the earth between the crust and the core |
| Magnitude |
measurement of energy released by an earthquake; maximum motion shown on a seismograph. |
| Liquification |
Shaking of the soil makes it at more like a liquid causing buildings to collapse |
| Mercalli Scale |
a scale that rates earthquakes according to their intensity and how much damage. Uses Roman Numerals |
| tsunami |
seismic sea wave, generated by a major earthquake in or near an ocean basin |
Cardio Block2anatomy
