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Earth Layers and Plate Tectonics Vocabulary Lithosphere Picture/Example Definition: Rigid outer most layer of Earth containing continents and ocean floor; broken into plates In my own words Tectonic Plates Picture/Example Definition: section of the lithosphere that moves over the mantle carrying ocean and continental crust In my own words Oceanic Crust Picture/Example Definition: Rock that forms ocean floor; mostly basalt; more dense In my own words Continental Crust Picture/Example Definition: Rock that forms continents; mostly granite; less dense In my own words Mantle Picture/Example Definition: Layer of hot material between the lithosphere and core In my own words Convection Currents Picture/Example Definition: Movement of fluid in mantle caused by a difference in temperature, transfers heat In my own words Inner Core Picture/Example Definition: A dense sphere of iron and nickel at the center of Earth In my own words Outer Core Picture/Example Definition: Layer of molten iron and nickel around inner core In my own words Plate boundary Picture/Example Definition: Place where two tectonic plates meet In my own words Convergent Picture/Example Definition: Two plates move toward each other In my own words Subduction Picture/Example Definition: process where oceanic crust is forced towards the mantle at convergent plate boundary In my own words Ocean Trench Picture/Example Definition: place in ocean floor where oceanic crust sinks towards mantle In my own words Island Arc Picture/Example Definition: Islands formed by volcanoes near ocean trench In my own words Volcano Picture/Example Definition: Place in the crust where magma has come to the surface In my own words Divergent Picture/Example Definition: Two plates move away from each other In my own words Rift Valley Picture/Example Definition: A deep valley that forms at a divergent plate boundary In my own words Mid Ocean Ridge Picture/Example Definition: an undersea mountain chain where new crust is produced In my own words Transform Picture/Example Definition: Place where two plates slip past each other In my own words Earthquakes Picture/Example Definition: a shaking of a part of the earth's surface that often causes great damage In my own words Seismic Waves Picture/Example Definition: Carry energy from an earthquake; P waves, S waves In my own words Seismograph Picture/Example Definition: Measures and records seismic activity In my own words Tsunami Picture/Example Definition: A large ocean wave caused by an earthquake In my own words Ring of Fire Picture/Example Definition: Ring around Pacific Ocean with many volcanoes In my own words Definition: Picture/Example In my own words Definition: Picture/Example In my own words Definition: Picture/Example In my own words Definition: Picture/Example In my own words Definition: Picture/Example In my own words
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