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Plate Tectonics

Stack #132558

QuestionAnswer
Continental Drift A hypothesis that continents have moved slowly to their current locations
Pangea A super continent that was composed of all over the continents
Seafloor Spreading A theory that hot, less dense material below Eath's crust rises toward the surface at the mid-ocean ridges
Plate Tectonics A theory that Earth's crust and part of the upper mantle are broken into sections
Plate The sections that make up Earth's crust and part of the upper mantle that are broken into sections
Lithosphere The layer of Earth that consists of the crust and upper mantle
Asthenosphere The plasticlike laeyr below the lithosphere
Convection Current A cycle made up of heating, rising, cooling, and sinking. It is also suggested to be the force behind continental drift
Earthquake The vibrations produced by the breaking of rock
Primary Waves Cause particles in rocks to move back and forth in the same direction that the wave is traveling, move quickly
Secondary Waves Move through Earth by casuing particles in rocks to move at right angles to the direction of wave travel
Surface Waves move rock particles in a backward, rolling motion and a side-to-side, swaying motion
Epicenter The point on Earth's surface directly above the earthquake
Seismograph This instrument measures seismic waves produced from an earthquake
Volcano An opening in Earth that erupts gases, ash, and lava
Vent After many years, magma reaches Earth's surface and flows out through an opening
Crater Steep-walled depression around a colcano's vent
Hot Spot Hor rock at these areas is forced toward the crust where it melts partially
Shield Volcano Build up of basaltic lava form a broad volcano with gently sloping sides
Tephra Bits of rock or solidified lava dropped from the air
Composite Volcano A cycle of lava and tephra is repeated over and over again to form a valcano in alternating layers
Cinder Cone Volcano When tephra falls to the ground, it forms a steep-sided, loosely packed valcano
Created by: Cooper Rose
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