science page 101 Word Scramble
|
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
Term | Definition |
stress | a force that acts on rock to change its shape or volume |
tension | the stress force that pulls on the crust and thins rock in the middle |
compression | the stress force that squeeze rock until it folds or breaks |
shearing | stress that pushes a mass of rock in two opposite directions |
normal fault | the fault cuts through rock at an angle, so one block |
reverse fault | same structure as a normal fault, but the blocks move in opposite directions |
strike-slip fault | the rocks on either side of the fault slip past each other sideways, with little up or down motion |
plateau | a large area of flat land elevated high above sea level |
earthquake | the shaking and trembling that results from movement of rock beneath Earth's surface |
focus | the area beneath Earth's surface where rock that was under stress begins to break or move |
epicenter | the point on the surface directly above the focus |
P wave | seismic waves that compress and expand the ground like an accordion |
S wave | seismic waves that can vibrate form side to side or up and down |
suface wave | slower than P and S waves, but they can produce severe ground movements |
seismograph | an instrument that records and measures an earthquake's seismic waves |
Modified Mercalli scale | rates the amount of shaking from an earthquake |
magnitude | a single number that geologists assign to an earthquake based on the earthquake's size |
Richter scale | the earliest magnitude scale |
moment magniude scale | rate the total energy an earthquake releases |
seismogram | the pattern of lines that is record an earthquake's seismic waves produced by a seismograph |
Created by:
#ballin
Popular Science sets