Area where the earth's lithospheric plates move in opposite but parallel directions along a fracture (fault) in the lithosphere.
a geological fault in which the upper side appears to have been pushed upward by compression
an instrument that is used to register earthquake waves and record the time that each arrived
used to describe the strength of an earthquake based on the height of the lines on the sesmigram
sesmic sea waves that begin over an earthquake focas and can be highly destructive when it crashes
what hazards are associated with earthquakes
large objects could fall on you, houses can be shaken to the ground, in can shake and explode radioactive matiriel, it can cause tsunamis
where is the aafest place to be durring an earthquake?
away from anything...especially the epicenter
where is the ring of fire located and what happens there?
the pacific ring of volcanoes, a line of active volcanoes that traces the edges of te subducting pacific plat, underwater
bits of rock or solidified lava dropped from the air during an explosive volcanic eruption; ranges in size from volcanic ash to volcanic bombs and blocks
scalding avalanche of ash and hot, toxic expanding gas, traveling very fast down the flank of a volcano
what is the difference between continental on oceanic volcanic eruptions?
oceanic plates; made out of basalt, produces maffic magma high in magnisium and iron produced quiet non explodive eruptions
continental; made our of granite, produces felsic magma high in silicaproduces explosive eruptions
what determines if an earthquake will be violent or quiet?
if it is high in silica i t will be violent because that bulilds up preassure
what are signals that a volcano might erupt
occorances of earthquakes changes in gasses (sulfer) a buldge in the side of a volcano