Ch. 10 Review

Front

What is a trace fossil?

Back

A trace fossil is a type of fossil that provides evidence of the activity of ancient organisms, such as footprints or burrows.

Front

What does the Geologic Time Scale represent?

Back

The Geologic Time Scale is a system used by geologists and paleontologists to describe the timing and relationships of events in Earth's history.

Front

What is correlation in geology?

Back

Correlation is the process of matching rocks and fossils from different locations to establish their age and relationship.

Front

How old is Earth?

Back

Earth is approximately 4.6 billion years old.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geologic time scale, typically because it was widespread and existed for a short duration.

Front

What is catastrophism?

Back

Catastrophism is the principle that Earth's landscape has been shaped by a series of sudden, short-lived, and violent events.

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What is uniformitarianism?

Back

Uniformitarianism is the principle that the same geological processes that operate today also operated in the past.

Front

What is superposition in geology?

Back

Superposition is the principle that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Front

What is a carbon film fossil?

Back

A carbon film fossil is a type of fossil that forms when organic material is compressed and leaves a thin film of carbon on the rock.

Front

What are gastropods?

Back

Gastropods are a class of mollusks that include snails and slugs, known for their single, spiraled shell or no shell at all.