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Glencoe Science ch.7

Overview of Chapters 7&8 of Glencoe Level Blue

QuestionAnswer
Large vibrations that move through rock or other Earth materials Earthquakes
when rocks strain and then break, the broken pieces snap back elastic rebound
the surface of a break in a rock fault
when strained rock's potential energy is released, it moves outward from the fault in waves seismic waves
the point inside Earth where movement along a fault first occurs and energy is released focus
the point on Earth's surface located directly above the focus Epicenter
instrument that records an earthquakes seismic waves. seismograph
when an earthquake occurs on the ocean floor, the sudden movement pushes against the wader and creates powerful waves that can travel thousands of kilometers tsunamis
cone-shaped hills or mountains formed by denser surrounding rock volcanoes
bits of rock or solidified lava dropped from the air after an explosive eruption tephra
basaltic lava which flows easily shield volcanoes
high gas content in the magma cinder cone volcanoes
volcanoes made of alternating layers of lava and tephra composite volcanoes
large rising bodies of magma force their way through earth's crust, not at plate boundaries hot spots
where plates converge and denser plates subduct, or are forced underneath less dense plates convergent plate boundaries
Created by: spaztard
Popular Earth Science sets

 

 



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