1) Alfred Wegener a) the man who discovered sea floor spreading b) the man who came up with the continental drift hypothesis. c) the man who discovered the moon d) the man who discovered venus 2) Plate a) hand-held device with a magnetic needle used to find magnetic north. b) an artifact to eat food c) a slab of Earth's lithosphere that can move around on the planet's surface. d) arly 20th century hypothesis, made by Alfred Wegener, that the continents move about on Earth's surface. 3) theory a) hand-held device with a magnetic needle used to find magnetic north. b) a device that uses sound waves to measure the depth of the seafloor and can be used to map the seafloor. c) broad explanation that is widely accepted because it is supported by a great deal of evidence. d) arly 20th century hypothesis, made by Alfred Wegener, that the continents move about on Earth's surface. 4) plate tectonics a) a large area, usually below sea level, that collects sediments due to being bowl shaped. b) 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. c) process by which something takes place. d) an instrument that measures the magnetic field intensity. 5) seismometer a) height of a feature measured relative to sea level. b) rock that originates in a volcano or volcanic feature, formed from lava or magma. c) equipment that measures seismic waves and other ground motions. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 6) epicenter a) a field produced by a magnetic object that exerts a force on other magnetic materials or moving electrical charges. b) the point on the Earth's surface directly above the focus of the earthquake. c) process by which something takes place. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 7) map a) a field produced by a magnetic object that exerts a force on other magnetic materials or moving electrical charges. b) a solid mixture of minerals or mineral grains; a few types of rocks are made from materials that are not minerals. c) a two-dimensional representation, usually of some part of Earth's surface. d) a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes. 8) lithosphere a) a field produced by a magnetic object that exerts a force on other magnetic materials or moving electrical charges. 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) the layer of solid, brittle rock that makes up the Earth's surface; the crust and the uppermost mantle. 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) glacier a) the middle layer of the Earth, made of hot rock that circulates by convection and located between the crust and the core. b) tentative explanation to a scientific question that can be tested. c) large sheets of slow moving, flowing ice. d) when the north and south magnetic poles are the same as they are now. 14) 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. 15) lava a) the mechanism for moving continents; the formation of new seafloor at spreading ridges pushes lithospheric plates on the Earth's surface. b) tentative explanation to a scientific question that can be tested. c) molten rock that has reached the Earth's surface. d) molten rock deep inside the Earth.

Earth Tectonic Plates

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