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Transcript
Structure of Earth Earth has Seafloor Plate Plate Four parts Spreading Tectonics I Tectonics II 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Final Jeopardy The thin, rigid outer layer of Earth that includes the surface. What is the crust? The thickest layer of Earth, mostly hot rock. What is the mantle? The part of Earth’s center that is composed of liquid iron and nickel. What is the outer core? The crust and the uppermost part of the mantle that is rigid. What is the lithosphere? The hotter, softer layer of the upper mantle upon which the lithosphere floats. What is the asthenosphere? This is the most abundant gas in Earth’s atmosphere. What is Nitrogen? These are Earth’s layers from inside to out. What is inner core, outer core, mantle, and crust? All living things on Earth are called the ____. What is the biosphere? All the fresh water and salt water on Earth is known as this. What is the hydrosphere? This is an organized group of parts that work together to form a whole. What is a system? A long narrow chain of mountains that runs along the Atlantic Ocean floor. What is the Mid-Atlantic Ridge? The deepest regions of the ocean floor. What are trenches? Compared with rocks near the trenches, rocks near the ocean ridges are this. What is younger? This is formed at ocean ridges. What is ocean crust? Rocks on the ocean floor show reversals in the polarity of this over geologic time. What is Earth’s magnetic field? A slab of lithosphere that moves on Earth’s surface. What is a plate? A place where two plates are moving toward each other. What is a convergent plate boundary? A place where two plates are moving away from each other. What is a divergent plate boundary? A place where two plates are sliding past each other. What is a transform plate boundary? The process of one plate descending beneath the other. What is subduction? These circular flows of hot, molten matter in the upper mantle may cause plate motion. What are convection currents? Hot mantle material rises because of this property compared to its surroundings. What is lower density? Tall mountains form at this type of convergent boundary. What is a continent- continent collision? A force in which the weight of a subducting plate pulls on the rest of the plate. What is slab pull? The name of a valley in East Africa where two plates are spreading. The Great Rift Valley Daily Double Please make a wager. Then click on the home. Final Jeopardy Please Make a Wager Earth is considered this type of system because matter cannot leave the system. What is a closed system?