book F chapter 2 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 |
tension | stretches the crust so that it becomes thinner in the middle |
compression | squeezes rock until it folds or breaks |
shearing | pushes the rock in two opposite directions |
because stress is a force it adds _____ to the rock | energy |
normal faults is caused by _____ | tension |
reverse faults are causes by ____ | compression |
strike slip fault | rocks on either side of the fault slip past each other sideways with little up or down motion |
anticline | a fold in the rock that ends upward into an arch |
syncline | a fold in the rock that bends downward to form a valley |
plateau | a large area of flat land elevated above sea level |
fault-block mountain | land between two normal faults that move upward |
focus | the point in the ground where the rock breaks and triggers an earthquake |
epicenter | the point on the surface directly above the focus |
which waves arrive first, are the fastest moving, have compressional motion, least damaging, and travel through solids and liquids? | primary waves, also called p waves |
which waves arrive second, have a side to side motion, and cannot travel through liquids? | secondary waves, also called s waves |
which waves are the slowest of waves, have a up and down motion, and are the most damaging? | surface waves |
which scale rates earthquakes based on the size of the seismic waves? | richter scale |
the ground movement caused by the waves are measured by a ______. | seismograph |
which scale is used to tell how much damage was done to homes and other buildings | mercalli scale |
which scale estimates the total energy released by an earthquake | moment magnitude scale |
tiltmeters | measures tilting or raising of the ground , works like a carpenters' level |
creep meters | measures horizontal movement of the ground |
GPS satellites | measures vertical and horizontal movement |
the risks of an earthquake is high along faults where two plates meet with a lot of? | friction |
the fault locks, and stress builds up until an ________ occurs. | earthquake |
Geologists cannot predict earthquakes because they cannot be sure where and when ____ will be released along a fault | stress |
Risk of earthquakes is high along the pacific coast of the united states because thats where the pacific and north american ____ meet | plates |
liquefaction | when shaking turns loose soil into liquid mud |
aftershocks | a smaller earthquake that happens after the larger earthquake |
tsunamis | a giant wave caused by an earthquake in the ocean floor |
in a normal fault , the hanging wall slips down relative to the? | footwall |
_______ has rocks on either side that slip past each other. | strike-slip fault |
in a reverse fault , the hanging wall moves up relative to the? | footwall |
Created by:
laurentaylor71
Popular Science sets