Fossils and Geologic Time Scale

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What is the geologic time scale?

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The geologic time scale is a record of the history of rock layers and fossils.

Tags

NGSS.MS-ESS1-4

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What are index fossils?

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Index fossils are fossils that are abundant, easily recognizable, short-lived, and widespread.

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What are fossils?

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Fossils are preserved remains of plants and animals from the remote past.

Tags

NGSS.MS-LS4-1

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What does the Law of Superposition state?

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The Law of Superposition states that younger rock layers are on top of older rock layers.

Tags

NGSS.MS-ESS1-4

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How do you use relative age dating?

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Relative age dating is used to put rock layers in correct order from oldest to youngest.

Tags

NGSS.MS-ESS1-4

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What are sedimentary rocks?

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Sedimentary rocks are types of rocks formed by the accumulation of sediments, often containing fossils.

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NGSS.MS-ESS2-3

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What is absolute age dating?

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Absolute age dating is a method used to determine the exact age of a rock or fossil.

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What is the significance of fossils in geology?

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Fossils provide important information about the history of life and the environment on Earth.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

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What are preserved fossils?

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Preserved fossils are remains of organisms that have been preserved in their original form.

Tags

NGSS.MS-LS4-1

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What is radioactive dating?

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Radioactive dating is a technique used to date materials by comparing the abundance of a radioactive isotope to its decay products.

Tags

NGSS.HS-PS1-8