1) a slab of Earth's lithosphere that can move around on the planet's surface. a) towns b) countries c) continents d) plates 2) a large, continuous mountain range found within an ocean basin; it is the location on the seafloor where magma upwells and forms new seafloor. a) earthquakes b) volcanoes c) mid-ocean ridge d) glaciers 3) a location where two lithospheric plates spread apart. a) convergent plate boundary b) divergent plate boundary c) transverse plate boundary d) arly 20th century hypothesis, made by Alfred Wegener, that the continents move about on Earth's surface. 4) normal polarity a) when the north and south magnetic poles are the same as they are now. b) arly 20th century hypothesis, made by Alfred Wegener, that the continents move about on Earth's surface. c) process by which something takes place. d) an instrument that measures the magnetic field intensity. 5) reversed polarity a) when the north and south magnetic poles are the same as they are now, reversed. b) rock that originates in a volcano or volcanic feature, formed from lava or magma. c) process by which something takes place. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 6) ground shaking caused by the release of energy stored in the crust. a) magnetic field b) earthquakes c) seafloor spreading d) magnetism 7) the process that causes continental crust to pull apart, breaking it into blocks. a) earthquakes b) seafloor spreading c) continental rifting d) magnetism 8) the crust that makes up the continents; thicker and less dense than oceanic crust. a) oceanic crust b) continental crust c) molten rock d) vulcanism 9) crest a) the highest point of a wave. b) a solid mixture of minerals or mineral grains; a few types of rocks are made from materials that are not minerals. c) molten rock that has reached the Earth's surface. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 10) sediment a) the crust that makes up the continents; thicker and less dense than oceanic crust. b) a solid mixture of minerals or mineral grains; a few types of rocks are made from materials that are not minerals. c) particles of rock or minerals ranging in size from clay to giant boulders. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes.

Divergent Plate Boundaries

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