Time Scale Broken Down

We live in the....

• Cambrian Era

• Cenozoic Era

• The Mesozoic

• now!

Which division on the geologic time scale is the shortest?

• Eon

• Era

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

The timespan (super eon) that lasted the longest was the

• Precambrian

• Mesozoic

• Jurrasic

• Cenozoic

Tags

NGSS.MS-ESS1-4

The first fossil appeared from the ____ Eon

• Archean

• Hadean

• Proterozoic

• Phanerozoic

Tags

NGSS.MS-ESS1-4

The dinosaurs became extinct about____

• 25 million years ago

• 65 years ago

• 65 million years ago

• 4 billion years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What was the age of reptiles?

• Mesozoic

• Cambrian

• Paleozoic

Order the divisions of geologic time from the longest to the shortest.

• eras, eons, periods

• periods, eras, eons

• periods, eons, eras

• 1. eons, eras, periods

Tags

NGSS.MS-ESS1-4

Approximately 3.8 billion years ago what first appeared on Earth?

• Whales

• Water

• Wasps

Tags

NGSS.MS-ESS2-4

What era had the largest diversification of life ever?

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

Which eon are we currently in?

• Phanerozoic

• Archaen

• Hadean

• Proterozoic