Convection Currents in which layer causes the plates to move , lithosphere, asthenosphere, inner core , Al Wegener proposed the theory of , plate tectonics, continental drift, seafloor spreading , Seafloor spreading may explain why..., mountains are building, continents are drifting apart, both , The idea that continents were once all joined together but were separated over millions of years is called.., continental drift, the theory of plate tectonics, law of conservation , Convergent plates ...., pull apart, slide past with great friction, compress together , Cracks in Earth's bedrock where plates may suddenly move are called, plates, earthquakes, faults , The energy produced by an earthquake are called , Rwaves, strike-slip faults, seismic waves , The mantle is moving because..., convection currents are in motion, the core is cooling off, the outer core is producing energy, Divergent plates pull apart at , fault valleys, rift trenches , mid-ocean ridges , Fault-block mountains occur at __________plates boundaries , convergent , divergent, transform .

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