Cast and Impression

This type of fossil is filled in and then turned to rock.

• trace

• body

• cast

• mold

Tags

NGSS.MS-LS4-1

Which of the following is a cast fossil?

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Tags

NGSS.MS-LS4-1

This type of fossil shows an impression of the organism in rock.

• body

• mold

• trace

• cast

Which is a cast?

• the impression in a rock left by the organism

• a copy of the organisms made of sediment

What is a cast fossil?

• A fossil that is a replica of the original organism

• A fossil that is an impression of the organism

• A fossil that contains the original organism

• A fossil that is made of minerals

Which process leads to the formation of a cast fossil?

• Erosion

• Sedimentation

• Mineralization

• Decomposition

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

• A cast is a filled-in mold

• A mold is a filled-in cast

• A cast is made of original material

• A mold is made of original material

Which of the following is an example of an impression fossil?

• A leaf imprint in rock

• A dinosaur bone

• A petrified tree

• A shell filled with minerals

How does an impression fossil form?

• By the organism decaying and leaving a void

• By the organism being replaced by minerals

• By the organism being buried in sediment

• By the organism being preserved in amber

What type of fossil is created when minerals fill a mold?

• Cast fossil

• Trace fossil

• Body fossil

• Impression fossil