Geologic Time and Fossils Review

Which of the following is the largest unit of geologic time?

• Eon

• Era

• Period

• Age

Tags

NGSS.MS-ESS1-4

What is the correct order of geologic time units from largest to smallest?

• Eon, Era, Period, Epoch, Age

• Era, Eon, Period, Age, Epoch

• Period, Era, Eon, Age, Epoch

• Age, Epoch, Period, Era, Eon

Tags

NGSS.MS-ESS1-4

An Era is a subdivision of which geologic time unit?

• Eon

• Period

• Epoch

• Age

If a scientist is studying a time span of millions of years, which geologic time unit are they most likely referring to?

• Period

• Age

• Era

• Epoch

Tags

NGSS.MS-ESS1-4

Which geologic time unit is defined as the smallest?

• Age

• Epoch

• Period

• Era

If you were to subdivide a period, which unit of geologic time would you get?

• Epoch

• Era

• Eon

• Age

Tags

NGSS.MS-ESS1-4

A paleontologist is examining fossils from a time span of thousands of years. Which geologic time unit is most appropriate for this study?

• Epoch

• Era

• Period

• Eon

How many years ago did Earth form?

• Approximately 4.6 billion years ago

• Approximately 2.5 billion years ago

• Approximately 1.2 billion years ago

• Approximately 10 billion years ago

Tags

NGSS.MS-ESS1-4

Which of the following is NOT a unit of geologic time?

• Eon

• Era

• Century

• Period

Tags

NGSS.MS-ESS1-4

Why is it important to understand geologic time divisions?

• It helps us study Earth's history

• It helps us predict the weather

• It helps us measure distances

• It helps us calculate speed

Tags

NGSS.MS-ESS1-4