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51 Cards in this Set
- Front
- Back
the study of earthquakes
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siesmology
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a break in the earths crust along which blocks of the crust slide relative to one another
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fault
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the change in the shape of rock in response to stress
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deformation
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rocks of the crust bend and change shape without breaking
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plastic deformation
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occurs when rock is streched beyond its breaking point
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elastic deformation
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the sudden return of elastistically deformed rock to its original shape
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elastic rebound
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differ in strength and in depth at which they begin
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earthquakes
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energy released by earthquakes that travel in waves
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seismic waves
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seismic waves tha travel through the earths interior
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body waves
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what are the two types of body waves
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s and p
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siesmic waves that travel along the earths surface
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surface waves
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primary waves "pressure waves" fastest seismic wave can travel through solids, liguids, and gases
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p waves
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secondaary waves "shear waves" 2nd fastest seismic wave CANT travel though liquids
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s waves
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move the ground up and down
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surface waves
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a device used to detect seismic waves
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seismograph
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a tracing of earthquake motion created by a seismograph used to determine the epicenter of waves
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seismogram
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the point on the earths surface directly ABOVE the earthquakes starting point
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epicenter
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the point INSIDE the earth where an earthquake begins
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focus
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seismomologist collect and compare seismograms from 3 seperate seismographs
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s p time method
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what is another name for the s p time method
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triangulation
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american seismologist who in the 1930s developed a scale used to measure earthquake intensity
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Charles Richter
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measures how prone an area is to experience earthquakes in the future
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earthquake hazard
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states that sections of active faults that have had relativly few earthquakes are likely to be sites of strong earthquakes in the future
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gap hypothesis
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the areas along a fault where relativly few earthquakes have occured
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seismic gap
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technologyu is used to design and construct buildings and bridges capable of withstanding earthquakes
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earthquake resistant buildings
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a weight placed in the roof of the building
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mass damper
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placed between floors to counteract pressures that push and pull the side of a building during an earthquake
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cross braces
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found in the basement and works like the mass damper
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active tendon system
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help prevent water and gas lines from breaking
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flexible pipes
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found in the foundation and act as shock absorbers
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base isolators
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the boundary between the earths crust and mantle
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moho
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part of the core discovered in 1936
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inner core
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the area on the earths surface where no direct seismic waves from an earthquake can be detected
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shadow zone
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seismoraph place there in 1969
(other cosmic bodies) |
the moon
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Viking1 boght a seismograph here in 1976 (other cosmic bodies)
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mars
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how many mars quakes have been detected?
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1
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the information satellite SOHO seismic activity following soloar flares
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sun
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found in the basement and works like the mass damper
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active tendon system
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help prevent water and gas lines from breaking
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flexible pipes
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found in the foundation and act as shock absorbers
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base isolators
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the boundary between the earths crust and mantle
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moho
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part of the core discovered in 1936
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inner core
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the area on the earths surface where no direct seismic waves from an earthquake can be detected
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shadow zone
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seismoraph place there in 1969
(other cosmic bodies) |
the moon
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Viking1 boght a seismograph here in 1976 (other cosmic bodies)
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mars
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how many mars quakes have been detected?
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1
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the information satellite SOHO seismic activity following soloar flares
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sun
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what is an earthquake on the sun called
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sunquake
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what is an earthguake on the moon called
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moon quakes
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what is an earthquake on mars called
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mars quake
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what is much more powerful and earthquake or sunquake
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sunquake
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