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the bending, titling and breaking of the Earth's crust; the change in the shape of rock in response to stress
a wave of energy that travels throught the Earth, away from an earthquake in all directions
a seismic wave that causes particles of rock to move in a back-and-forth direction, the fastest seismic wave
a seismic wave that causes particles of rock to move in a side-to-side direction, the secondary seismic wave
a break in the Earth's crust along which blocks of the crust slide relative to one another; due to tectonic forces
when the rock can only be stretched to a certain point before breaking(does lead to e quakes)
San Andreas Fault
An earthquake zone in California where the Pacific Plate and the North American Plate slide past each other, frequently causing earthquakes
an instrument that records vibrations in the ground and determines the location and strength of an earthquake
This measures how likley an area is to have damaging earthquakes in the future, it is determined by past and present seismic activity
a hypothesis that states that a major earthquake is more likely to occur along the part of an active faults that have had relativley few earthquakes in a certain period of time
area along a fault where few earthquake have happened recently but where strong earthquakes have happened before
What is a weight placed in the roof that is computer sensored to move and counteract an earthquake
act as shock absorbers during an earthquake, makde of layers of rubber or steel wrapped around a lead core; absorb seismic waves to avert their travel through the building
how is the strength of earthquakes related to how often they occur
the higher the magnitude of the earthquake, the less frequently they occur
is what architects and engineers use to design and build structures to withstand earthquakes
what can you do to make your home safer before an earthquake
put heavier things on lower shelves and prepare food, water and first aid kits
what are some plans you can make now for things to do during an earthquake
find safe places in each room, make a plan with others where to meet after the earthquake
what is the best thing to do if you are indoors during an earthquake
crouch or lie face down under a table or desk in the center of a room
what is the best thing to do if you are outdoors during an earthquake
lie face down away from buildings, power lines and trees and cover your head with your hands
first step in finding an earthquake's epicenter is to collect several of these from different seismographic stations
lowest level of intensity on the Modified Mercalli Scale describes an earthquake
not felt by most people
earthquake kit should contain
flashlight, food that won't spoil, water, first aid kit, radio, fire extinguisher, medicine, batteries, clothes
theory that states that sections of active faults that have relatively few earthquakes are likley to be the sites of strong earthquakes in the future is called
not all seismologists believe that the following is an accurate way to forecast earthquakes
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