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Geology Geology The study of Earth’s structure, processes, and history Erosion Erosion The process of water/ice/wind breaking down rocks and carrying them away Raise your hands to define the following words. 2

Pronunciation Practice: Uni-form-i-tar-ian-ism 3

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Intro Video: (4:30) 5

Formed when magma or lava cools The appearance depends on whether it cooled above or below the surface (Magma = below the surface; Lava = above the surface) Obsidian Pumice 6

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Made when sediments pressed together to form solid rock Sediment Sediment: small bits of rock, minerals, and remains of plants and animals Rainbow Basin Near Barstow A “syncline” 8

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heatpressurechemical reactions forms when existing rock is changed by heat, pressure, and/or chemical reactions Usually happens deep underground Marble 10

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Forces that build, change and destroy rock, such as: Erosion Erosion Deposition Deposition: streams carry broken bits of rock to the sea or lakes Heat and Pressure Heat and Pressure: can bend and cause chemical changes Melting Melting: Deep in the Earth heat and pressure are so great that the rocks melt completely Volcanic Activity Volcanic Activity 12

Glue in the ½ sheet of paper Draw arrows between rocks to represent the Rock Cycle Use page 271 in book and the poster 13

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A)erosion B)heat and pressure C)deposition D)precipitation 15

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