Geology and Scientific Concepts

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Geologist

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A scientist who studies the processes and materials that form the solid part of Earth.

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Observation

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Something you notice using any of the five senses.

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Inference

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Something you figure out based on observations and information you already know.

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Fossil

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A clue about life from the past that is preserved in rock.

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Model

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Something scientists make to make questions about the real world.

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Sediment

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Small pieces of rock, such as silt or sand.

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Sedimentary Rock

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A type of rock formed from sediment that compacts and cements over time.

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Compact

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To press together.

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Cement

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To stick together in the process of forming rock.

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Rock Layer

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A thick sheet of rock formed from the same material.