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Earth Science Tarbuk and Lukens Chapter 7 Review

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Kyler Correia Period-1 4-2-12 Ch. 7 Review Alfred Wegner is credited with developing the Continental Drift Hypothesis The first evidence that the Continents once fit together was that they are shaped like puzzle pieces that fit together Pangaea was a supercontinent that Wegner believed once existed. Evidence to support Wegner?s theory was that: there were ancient climate changes, fossils matched across the sea, rock types and structures match, and the continents shape seemed to fit together. The discovery of the Mesosaurus in South America and Africa supports the Continental Drift hypothesis because it shows that the Mesosaurus lived and died in the area of what once was Africa and South America and once those two continents separated the fossils and remains stayed on them.

honors science 8 vocab summer work

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Earth Science Vocabulary No. Word Definition Sentence Picture 1 Mineral A natural inorganic solid with crystals and a chemical composition. Some examples of minerals are quartz, diamonds, and rubies. 2 Crystal A solid body with a characteristic internal structure. Most of the crystals I see are quartz. 3 Magma Molten material beneath or within the?earth's crust. Magma is from volcanoes and forms igneous rocks. 4 Silicate Any of the?largest group of mineral compounds. Some minerals that belong in the silicate family are quartz and mica. 5 Hardness The state or quality of being hard. The hardness of diamond is 10 on the Richer scale. 6 Luster The state or quality of shining by reflecting light. Satin has a lot of luster when light is on it. 7 Streak

Plate Tectonics

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Plate Tectonics .? Theory of how the continents moved apart ( Continental Drift) driven bySeafloor Spreading? .? Tectonics - important motions of Earth?s Crust .? Plates- Make up the crust Tectonic Plates . Crust made up of 12 or so plates study of movement/ formation of these plates Continental Drift .? Theory that all continents are moving across Earth?s surface Evidence: Fossils Glacial Striations/Grooves Rock deposits Jigsaw puzzle of Modern Continents Creation Of Continental Drift .? Alfred Wegener - 1912 .? Continents were together at one point ---> ? Pangea? -- ?All Earth? .? Over millions of years ---> continents split apart .? Wegener discredited because he was a? meteorologist and he could not explain a force for moving plates
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