Earth_Shakes_Rattles_and_Rolls

Earth_Shakes_Rattles_and_Rolls - Earth Shakes Rattles and...

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Earth Shakes, Rattles, and Rolls Plate Tectonics Volcanoes Earthquakes
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What is the relationship between the earth’s plates, volcanoes, and earthquakes?
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Plates
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Earthquakes
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Volcanoes
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Let’s look at those maps again.
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Plates Earthquakes Volcanoes
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Earthquakes and Volcanoes are found where plates meet.
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Evidence Wegener used to support theory of continental drift: Continents fit like a puzzle Fossil evidence Rocks were similar in Africa and South America Evidence Antarctica once had a tropical climate
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How did geologists explain how the earth’s plates moved? Mid-Atlantic Ridge allows mantle to seep to surface through cracks and pushes plates of the earth apart.
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Seafloor spreading animation To see how geologists believe the plates moved go to the site below . Notice the Atlantic Ocean seafloor spreading.
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Crust Mantle Outer core Inner core
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Types of Mountains Folded Fault-block Volcanic Unwarped
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FOLDED MOUNTAINS
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FOLDED MOUNTAINS Appalachian Mountains in the eastern United States, and the Swiss Alps in Switzerland form when two plates collide head on, and their edges crumble consist mainly of sedimentary rocks, like limestone and shale
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FAULT-BLOCK MOUNTAINS
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FAULT-BLOCK MOUNTAINS Consist of huge blocks of the earth's crust that have been tilted or pushed up along a fracture line called a fault Sierra in California, Arizona is an example. Created when a plate hits a fault and tips upside down, creating erosion and debris, which is at the base of the mountain.
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VOLCANIC MOUNTAIN NAMIBIA IN AFRICA
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Volcanic mountains Formed when molten rock, or magma deep within the earth,
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