Geo Timeline Review

Front

What are the soft parts of organisms likely to become?

Back

Fossils are more likely to form from hard parts of organisms, such as bones and shells, rather than soft parts.

Front

What is the correct order of the parts of the geologic time scale from broadest to narrowest?

Back

Eon, Era, Period, Epoch.

Front

In what eon did humans evolve?

Back

Humans evolved in the Phanerozoic eon.

Front

What are the three common types of fossils?

Back

Mold, cast, and trace fossils.

Front

What does the term 'Phanerozoic' mean?

Back

Phanerozoic means 'Visible Life'.

Front

What is a mold fossil?

Back

A mold fossil is a cavity in rock that has the shape of an organism.

Front

What is a cast fossil?

Back

A cast fossil is a replica of an organism formed when minerals fill a mold.

Front

What is a trace fossil?

Back

A trace fossil is evidence of an organism's activity, such as footprints or burrows.

Front

What is the significance of the Hadean eon?

Back

The Hadean eon is significant as it represents the time before the oldest known rocks and the formation of the Earth.

Front

What major events occurred during the Phanerozoic eon?

Back

The Phanerozoic eon saw the emergence of complex life forms, including plants, animals, and eventually humans.