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| Scientists who have studied the Earth and proccesses that have shaped Earth over time. |
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| The principal that geological processes operating today also operated in the past. |
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| The rocky outer layer of Earth. |
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| A rock made of compounds of silicon and oxygen generally containing metals such as alluminum, Iron, or oxygen. |
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| The thick layer of hot, yet solid rock beneath Earths crust. |
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| A layer of relactively cool, rigid rock that includes the uppermost part of the mantle as well as Earths crust. |
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| A layer of softer weaker rock beneaths Earths lithosphere, which can flow slowly. |
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| The Lower portion of Earths mantle. |
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| The dense sphere at Earths center, made mostly of Earths center, made mostly or IRON and Nickel. |
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| A solid combination of metals or other materials. |
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| A description of a material that isnt organic. |
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| A color of a minerals powder. |
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| The way a minerals surface reflects light. |
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| The resistance of a mineral to scratching. |
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| The way a mineral breaks, determined by the minerals crystal structure. |
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| A minerals tendency to split along regular well defined planes. |
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| Rock that forms from magma or lava. |
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| A mixture of molten rock and gases including water vapor which forms underground. |
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| Magma that flows over the Earths surface. |
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| An igneous rock that forms underground by hardened magma. |
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| An igneous rock that forms on Earths surface. |
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| Small,solid pieces of material that come from rocks or living organisms. |
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| Rocks that form overtime as a sediment is squeezed and cemented together. |
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| Sedimetary rocks that form from broken fragments of other rocks. |
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| Rock that has been changed by temperature pressure or reactions with hot water. |
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| A metamorphic rock crystalline arranged in parralel bands. |
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| A series of procceses in which rocks continously change from one type to another, |
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