Geologic Time Scale Quiz

Why was the Geologic Time Scale developed?

• The Geologic Time Scale was developed as a way to help scientists organize the Layers of the Earth.
• The Geologic Time Scale was developed as a way to help scientists organize the Layers of the Atmosphere.
• The Geologic Time Scale was developed to help scientists organize everything they were learning about Earth's history from the rock and fossil record.

Why is it important for people to know about rocks?

• People need to know about rocks because they tell us about Earth's distribution of water.
• People need to know about rocks because they tell us about Earth's history.
• People need to know about rocks because they tell us about Earth's atmosphere.

What are the four divisions that Earth's history is broken down into?

• Eons, Eras, Periods, and Epochs
• Eons, Eras, Timelines, and Ages
• Eons, Dates, Period, and Timelines

____________ is the longest division in the Geologic Time Scale.

• Epoch
• Era
• Eon
• Period

The first eon in Earth history was the . . .

• Hadean Eon
• Proterozoic Eon
• Precambrian Eon

Life appeared on Earth during . . .

• Hadean Eon
• Proterozoic Eon
• Precambrian Time

When do eras end?

• A mass extinction
• An explosion of life
• Both are correct

What was the first period on Earth?

• Cambrian
• Triassic
• Quaternary
• Ordovician

____________________ is the name of our current epoch.

• Pleistocene
• Holocene
• Paleocene

Some scientists think we have entered a new epoch called the ___________________ Epoch, due to humans how having a dramatic effect on the geology of the Earth.

• Anthropocene
• Paleocene
• Holocene
• Pleistocene