Fossils and Geologic Time Scale

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What is the fossil record?

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The fossil record is a collection of fossils that provides evidence for the history of life on Earth.

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 in undisturbed sedimentary rock layers, younger rock layers are on top of older rock layers.

Tags

NGSS.MS-ESS1-4

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What is relative age dating?

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Relative age dating is determining the age of an object in relation to another object, such as saying you are older than your sister.

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What are fossils?

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

Tags

NGSS.MS-LS4-1

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What is absolute age dating?

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Absolute age dating is a method used to determine the actual age of a rock or fossil, often using radioactive dating.

Tags

NGSS.HS-ESS1-6

NGSS.HS-PS1-8

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What type of rocks are fossils typically found in?

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Fossils are typically found in sedimentary rocks.

Tags

NGSS.MS-LS4-1

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What is the significance of the fossil record in understanding evolution?

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The fossil record provides evidence that supports the theory of evolution by showing changes in species over time.

Tags

NGSS.MS-LS4-1

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What is the difference between relative age dating and absolute age dating?

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Relative age dating compares the ages of rocks or fossils, while absolute age dating provides a specific age.

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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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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