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Why Geology? | |
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What is geology? | |
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Why study geology? | |
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How do we knowhellip;how to study Earth? | |
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What does the principle of uniformitarianism mean? | |
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What is the theory of plate tectonics? | |
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How does the concept of work apply to Earth? | |
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Earth Materials: Classification, Origin, Uses | |
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Minerals: Building Blocks of the Planet | |
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What are the properties of minerals? | |
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What are minerals composed of? | |
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How do we knowhellip;the atomic structure of minerals? | |
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How do elements combine to make minerals? | |
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What is a mineral? | |
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What determines the physical properties of minerals? | |
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What are the most important minerals? | |
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Basics of an Atom | |
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Silicate Mineral Structures | |
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Gemstones | |
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Rocks and Rock-Forming Processes | |
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How and where do rocks form? | |
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Can rocks be classified according to the processes that form them? | |
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How do we knowhellip;how to determine rock origins? | |
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How are the rock classes related to one another? | |
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Formation of Magma and Igneous Rocks | |
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What are igneous processes? | |
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How are igneous rocks classified? | |
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Where do igneous rocks appear in a landscape? | |
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How and why do rocks melt? | |
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How do we knowhellip;how magma is made? | |
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How does magma generation connect to plate tectonics? | |
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What makes igneous rock compositions so diverse? | |
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Why are there different types of volcanoes and volcanic eruptions? | |
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How are volcanoes hazardous? | |
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Why donrsquo;t all magmas erupt? | |
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Bowen's Reaction Series | |
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Mitigating and Forecasting Volcanic Hazards | |
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Formation of Sediment and Sedimentary Rocks | |
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How and why do rocks disintegrate to form sediment? | |
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What is the link between weathering and sediment? | |
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Why are fossils found in sedimentary rocks? | |
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How does loose sediment become sedimentary rock? | |
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How are sedimentary rocks classified? | |
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How do sedimentary rocks reveal ancient environments? | |
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How do we knowhellip;how to interpret unseen turbidity currents? | |
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How do plate tectonics and sedimentary rocks connect? | |
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Chemical Reactions and Chemical Equations | |
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Why is Seawater Salty? | |
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Geochemistry of Calcite | |
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Formation of Metamorphic Rocks | |
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What is metamorphism? | |
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What is the role of temperature in metamorphism? | |
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What is the role of pressure in metamorphism? | |
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What is the role of fluid in metamorphism? | |
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Why do metamorphic rocks exist at the surface? | |
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How do we knowhellip;how to determine the stability of minerals? | |
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What were the conditions of metamorphism? | |
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How are metamorphic rocks classified? | |
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What was the rock before it was metamorphosed? | |
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Where does metamorphism occur? | |
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Metamorphic Isograds, Zones, and Facies | |
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Earth Materials as Time Keepers | |
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How do you determine the order of events? | |
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How are geologic events placed in relative order? | |
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How do geologists determine the relative ages in widely separated places? | |
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How was the geologic time scale constructed? | |
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How do you recognize gaps in the rock record? | |
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How have scientists determined the age of Earth? | |
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How is the absolute age of a rock determined? | |
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How do we knowhellip;how to determine half-lives and decay rates? | |
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How do you reconstruct geologic history with rocks? | |
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Radioactivity and Radioactive Decay | |
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The Mathematics of Radioactive-Isotope Decay | |
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Using Geologic Clocks | |
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Earthrsquo;s Internal Processes | |
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Journey to the Center of Earth | |
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How do geologists know about rocks in Earthrsquo;s interior? | |
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How do earthquakes help make images of Earthrsquo;s interior? | |
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How do we knowhellip;how to determine velocities of seismic waves in rocks?</ | |