Eons Eras Periods Epochs

Which of the following is not an eon of geologic time?

• Hadean

• Proterozoic

• Archean

• Paleozoic

Tags

NGSS.MS-ESS1-4

True or False? The Paleozoic is the oldest era of the Phanerozoic eon.

• True

• False

Tags

NGSS.MS-ESS1-4

The longest units of geologic time are

• eons

• eras

• periods

• epochs

Tags

NGSS.MS-ESS1-4

The shortest units of geologic time are

• eons

• eras

• periods

• epochs

Which period marks the beginning of the Earth's Paleozoic Era?

• Cambrian

• Ordovician

• Silurian

• Devonian

Tags

NGSS.MS-ESS1-4

During which era, known as the 'age of the Earth', did trilobites, fishes, and other marine organisms dominate?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

In the context of Earth's history, what are the four geological eras in order from OLDEST to NEWEST?

• Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

• Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

• Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

• Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

During which era did the Earth experience the 'Age of Fishes'?

• Mesozoic

• Cenozoic

• Paleozoic

• Precambrian

Eons are subdivided into _________.

• eons

• eras

• periods

• epochs

Tags

NGSS.MS-ESS1-4

Eras are subdivided into _________.

• eons

• eras

• periods

• epochs

Tags

NGSS.MS-ESS1-4