Fossil Formation

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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.

Tags

NGSS.MS-LS4-1

Front

What are sedimentary rocks?

Back

Sedimentary rocks are types of rocks formed by the accumulation and compaction of mineral and organic particles.

Tags

NGSS.MS-ESS2-1

Front

How do fossils form?

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Fossils form when organisms are buried quickly after death, preventing decay, and over time, sediments harden around them.

Front

Which layer of rock typically contains the oldest fossils?

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The oldest fossils are usually found in the lowest layers of sedimentary rock.

Tags

NGSS.MS-ESS1-4

Front

What is the Law of Superposition?

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The Law of Superposition states that in undisturbed layers of rock, the oldest layers are at the bottom and the youngest are at the top.

Tags

NGSS.MS-ESS1-4

Front

What is compaction in sedimentary rock formation?

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Compaction is the process where sediments are pressed together under pressure, reducing their volume.

Tags

NGSS.MS-ESS2-1

Front

What is cementation in sedimentary rock formation?

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Cementation is the process where dissolved minerals crystallize and bind sediment particles together.

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What are trace fossils?

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Trace fossils are not remains of the organism itself but rather evidence of its activity, such as footprints or burrows.

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What role do water and minerals play in fossil formation?

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Water can carry minerals that fill in the spaces of an organism's remains, helping to create a fossil.

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What is the significance of fossils in understanding Earth's history?

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Fossils provide important information about past life forms, environments, and the changes that have occurred over time.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2