Earth's History

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What is the Law of Superposition?

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The Law of Superposition states that in undisturbed sedimentary rock layers, younger rocks are found above older rocks.

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NGSS.MS-ESS1-4

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What does the Law of Superposition help determine about fossils?

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It helps determine the age of the fossil compared to other fossils.

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NGSS.MS-ESS1-4

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What is Geology?

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Geology is the scientific study of the origin, history, and structure of Earth and the processes that shape it.

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

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What is Uniformitarianism?

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Uniformitarianism is the principle that the same geological processes that operate today also operated in the past.

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NGSS.MS-ESS2-2

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What is Catastrophism?

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Catastrophism is the theory that Earth's features are shaped by sudden, short-lived, and violent events.

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NGSS.MS-ESS3-2

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What can fossils tell us about Earth's history?

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Fossils provide evidence of past life forms and the environments they lived in, helping to reconstruct Earth's history.

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NGSS.MS-LS4-1

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What is a sedimentary rock?

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Sedimentary rock is a type of rock formed by the accumulation and compaction of mineral and organic particles.

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What is the significance of fossils in sedimentary rocks?

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Fossils in sedimentary rocks can indicate the age of the rock layer and the types of organisms that existed at that time.

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NGSS.MS-ESS2-3

NGSS.MS-LS4-1

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What is the difference between relative dating and absolute dating?

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Relative dating determines the age of rocks and fossils in relation to one another, while absolute dating provides a specific age.

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What is a fossil?

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A fossil is the preserved remains or traces of a once-living organism, often found in sedimentary rock.

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NGSS.MS-LS4-1