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
earthquakes
| Term | Definition |
|---|---|
| s wave | a type of seismic wave that moves the ground up and down or side to side |
| p wave | a type of seismic wave that compresses and expands the ground |
| surface wave | vibrations that travel through earth carrying the energy realeased during an earthquake |
| focus | the point beneath the earths surface where rock breaks under stress and causes a earthquake |
| epicenter | the point on the earths surface directly above an earthquakes focus |
| Mercalli scale | a scale that rates earthquakes according to their intensity and how much damage they cause at a particular place |
| moment magnitude scale | a scale that rates earthquakes by estimating the total energy released by an earthquake |
| magnitude | the measurement of an earthquakes strength based on seismic waves and movements along faults |
| tsunami | a giant wave usually caused by an earthquake beneath the ocean floor |
| liquefaction | the process by which an earthquakes violent movement suddenly turns loose soil into liquid mud |
| aftershock | an earthquake that occurs after a larger earthquake in the same area |
| compression | stress that squeezes rock until it folds and breaks |
| tension | stress that stretches rock so that it becomes thinner in the middle |
| shearing | stress that pushes masses of rock in opposite directions in a sideways movement |
| normal fault | a type of fault where the hanging slips downward caused by tension in the crust |
| reverse fault | a type of fault where the hanging wall slips upward caused by tension in the crust |
| platue | a land form that has high elevation and more or less level surface |
| convergent | a plate boundary where two plates move toward each other |
| divergent | a plate boundary where two plates move away from each other |
| transform | a plate boundary where two plates move past each other in opposite directions |
| subduction | the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary |
| convection | the transfer of thermal energy by the movement of fluid |
| seismology | the branch of science concerned with earthquakes and related phenomena |
| seismograph | a device that records ground movement caused by seismic waves as they move through earth |
| earthquake | the shaking that results from the movement of rock beneath earths surface |
| crust | the layer of rock that forms earths outer surface |
| fault | a break or crack in earths lithosphere along which the rocks moves |
| mantle | the layer of hot solid material between earths crust and core |
| lithosphere | a rigid layer made up of the uppermost part of the mantle and the crust |
| lithospheric plate | lithospheric plates are regions of Earth's crust and upper mantle |
| seismologist | a person who studies earthquakes |
Created by:
1964185468
Popular Earth Science sets