1) Convection Currents in which layer causes the plates to move a) lithosphere b) asthenosphere c) inner core 2) Al Wegener proposed the theory of a) plate tectonics b) continental drift c) seafloor spreading 3) Seafloor spreading may explain why... a) mountains are building b) continents are drifting apart c) both 4) The idea that continents were once all joined together but were separated over millions of years is called.. a) continental drift b) the theory of plate tectonics c) law of conservation 5) Convergent plates .... a) pull apart b) slide past with great friction c) compress together 6) Cracks in Earth's bedrock where plates may suddenly move are called a) plates b) earthquakes c) faults 7) The energy produced by an earthquake are called  a) Rwaves b) strike-slip faults c) seismic waves 8) The mantle is moving because... a) convection currents are in motion b) the core is cooling off c) the outer core is producing energy 9) Divergent plates pull apart at a) fault valleys b) rift trenches c) mid-ocean ridges 10) Fault-block mountains occur at __________plates boundaries a) convergent b) divergent c) transform 11) The _________________ is liquid as proven by seismic waves. a) inner core b) outer core c) lithosphere 12) Hawaiian Islands are created at a) plate boundaries b) MOR c) subduction zones d) fault lines e) hot spots 13) Plate movements can cause a) earthquakes b) magnetic reversals c) hurricanes d) ionic lights in the sky e) storms 14) Deposition usually occurs at ... a) the bottom of a hill b) underground c) in the middle of hill d) at mountain tops e) at the top of a hill 15) Erosion occurs when sediments a) are dropped off b) relocated c) picked up d) fall down a fault  16) Caves are caused by a) underground erosion b) underground deposition c) plate tectonics d) tsunamis

Plate Tectonics

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