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Science Vocab

molten rock (at the surface)lava
molten rock (deep within the Earth)magma
lithospheric platetop most solid part of the Earth
convergent boundrya plate boundry at which plates come together
divergant boundrya plate boundry at which plates move apat
Pangeathe single giant landmass that existed over 200 million years ago
ocean floor spreadingthe process in which old ocean floor is pushed away from a midocean ridge by the formation of new ocen floor
convection currentsa movement of material caused by differences in currents
seismographan instument that detects and measures seismic waves
Ring of Firethe earthquake and volcanic zone that encircles the Pacific Ocean
Richter Scalethe scale used to measure the strengh and occurancy of earthquakes

Jenn Jordan

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