8.8 - Eras of Earth's History

Mammals are a dominant group in which era?

• Cenozoic

• Mesozoic

• Paleozoic

Tags

NGSS.MS-LS4-1

What type of event usually marks the end of an Era?

• a mass extinction

• an earthquake

• a new species

• a volcanic eruption

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What era did trilobites, fishes, and other marine organisms dominate?

• Cenozoic

• Paleozoic

• Mesozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which era is the most recent, the one that we are currently in?

• Mesozoic

• Paleozoic

• Cenozoic

Scientists chose where units of geologic time began and ended based on the appearance or disappearance of life.

• true

• false

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The dinosaurs and reptiles were dominant in which Era?

• Precambrian

• Mesozoic

• Paleozoic

• Cenozoic

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

NGSS.MS-LS4-4

What is the "Cambrian Explosion?"

• the appearance of a large number of new organisms during the Paleozoic Era

• the disappearance of many organisms due to an asteroid hitting Earth

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

During which Era did Pangaea, the supercontinent, exist?

• Mesozoic

• Cenozoic

• Paleozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Which Era is referred to as the "Age of Reptiles" and was also marked the first appearance of birds?

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-2

Humans appeared on Earth during the Quaternary period, about how long ago?

• 2 million years ago

• 100,000 years ago

Tags

NGSS.MS-LS4-2