Fossils

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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

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Where can the oldest layer of sedimentary rock be found?

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The oldest layer of sedimentary rock is found at the bottom layer.

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NGSS.MS-ESS1-4

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Which animal part is most likely to form a fossil?

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Bone is the animal part most likely to form a fossil.

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NGSS.MS-LS4-1

Front

What is a mold fossil?

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A mold fossil is a mark or cavity made in sediment in the shape of a shell or other body.

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NGSS.MS-LS4-1

Front

What does it mean when a species is considered extinct?

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A species is considered extinct when there are no longer any living members of that species.

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NGSS.MS-LS4-1

Front

In which type of rock are most fossils found?

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Most fossils are found in sedimentary rock.

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NGSS.MS-LS4-1

Front

What is a cast fossil?

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A cast fossil is a type of fossil that forms when a mold is filled with minerals or other materials.

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What is the difference between a mold and a cast fossil?

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A mold fossil is an impression of an organism, while a cast fossil is a replica formed from the mold.

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What is sedimentary rock?

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Sedimentary rock is a type of rock formed by the accumulation of sediments, often containing fossils.

Tags

NGSS.MS-LS4-1

Front

What is the process of fossilization?

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Fossilization is the process by which organic material is replaced by minerals over time, preserving the shape of the organism.