Geologic Time Scale

According to scientists, how long ago was the earth first formed?

• 4.5 billion years ago

• 600 million years ago

• 5 million years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

What is the largest division of geologic time called?

• age

• eon

• era

• period

Tags

NGSS.MS-ESS1-4

The Jurassic period is in the Paleozoic era.

• True

• False

In what era did forms of life first start to show?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

Periods are divided into eras, and eras are divided into eons.

• True

• False

Tags

NGSS.MS-ESS1-4

Which era contains "recent life"?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

In which PERIOD were cone-bearing plants dominant?

• Carboniferous

• Devonian

• Permian

• Silurian

Which era means "ancient life"?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

During which era did the supercontinent Pangea break apart?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

Tags

NGSS.MS-ESS2-3

During what PERIOD were the first flowering plants found?

• Jurassic

• Creataceous

• Triassic

• Mesozoic