Geologic Time Review

Front

What does the term 'Phanerozoic' mean?

Back

Visible life.

Front

List the correct order of geological eras from past to present.

Back

Precambrian, Paleozoic, Mesozoic, Cenozoic.

Front

What is the correct order of geologic time units?

Back

Eon > Era > Period > Epoch.

Front

True or False: Geologic Time has ended.

Back

False.

Front

What was probably the first organism on Earth?

Back

Bacteria.

Front

What are the three eras included in the Phanerozoic Eon?

Back

Paleozoic, Mesozoic, Cenozoic.

Front

What is the significance of the Precambrian Era?

Back

It is the longest era in Earth's history, covering about 88% of geologic time.

Front

What major event marks the beginning of the Paleozoic Era?

Back

The Cambrian Explosion, which saw a rapid diversification of life.

Front

What is the Mesozoic Era known for?

Back

It is known as the age of reptiles, including dinosaurs.

Front

What major event marks the end of the Mesozoic Era?

Back

The mass extinction event that wiped out the dinosaurs.