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1) the layer of solid, brittle rock that makes up the Earth's surface; the crust and the uppermost mantle. a) asthenosphere b) lithosphere c) sea floor spreading d) upper mantle 2) the theory that the Earth's surface is divided into lithospheric plates that move on the planet's surface; plate tectonics is driven by convection currents within Earth's mantle. a) earthquake b) continental drift c) plate tectonics d) epicenter 3) the movement of material due to differences in temperature. a) kinetic energy b) conduction c) Convection d) solar radiation 4) the innermost, densest layer of a celestial body; Earth's metallic core has an inner solid layer and an outer layer of liquid metal; the sun's core is where nuclear fusion takes place. a) upper mantle b) core c) lower mantle d) oceanic crust 5) 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) mountains b) volcanos c) mid-ocean ridge d) subduction zone 6) a deep gash in the seafloor; the deepest places on Earth. a) subduction zone b) trench c) hypocenter d) mid Atlantic ridge 7) a circular pattern of hot material rising and cool material sinking. a) radiation b) conduction c) convection cell d) magnetism 8) the mechanism for moving continents; the formation of new seafloor at spreading ridges pushes lithospheric plates on the Earth's surface. a) conduction b) magnetism c) convection cell d) Seafloor spreading 9) ocean basin a) areas covered by ocean water; the three major ocean basins are the Pacific, Atlantic, and Indian. 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) continent a) land mass above sea level. 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. 11) asthenosphere 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) layer below the lithosphere, made of a portion of the upper mantle; the asthenosphere can flow. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 12) mantle a) the crust that makes up the continents; thicker and less dense than oceanic crust. b) the middle layer of the Earth, made of hot rock that circulates by convection and located between the crust and the core. c) areas covered by ocean water; the three major ocean basins are the Pacific, Atlantic, and Indian. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 13) mantle a) a circular pattern of hot material rising and cool material b) tentative explanation to a scientific question that can be tested. c) the middle layer of the Earth, made of hot rock that circulates by convection and located between the crust and the core. d) land mass above sea level.

Tectonic Plate Motions

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