Exploring the Geological Timescale

Which of the following is a geological era?

• Jurassic

• Paleozoic

• Cambrian

• Triassic

Tags

NGSS.MS-ESS1-4

During which era did the dinosaurs become extinct?

• Paleozoic

• Mesozoic

• Cenozoic

• Precambrian

Which major event marks the end of the Paleozoic era?

• The appearance of mammals

• The Permian-Triassic extinction event

• The first appearance of fish

• The formation of the supercontinent Pangaea

Tags

NGSS.MS-ESS1-4

How many millions of years ago did the Mesozoic era begin?

• 65 million years ago

• 252 million years ago

• 541 million years ago

• 4,600 million years ago

Tags

NGSS.MS-ESS1-4

Which period is known for the first appearance of mammals?

• Triassic

• Jurassic

• Cretaceous

• Devonian

Compare the length of the Precambrian time to the Phanerozoic eon. Which is longer?

• Precambrian

• Phanerozoic

• They are the same length

• Cannot be determined

Tags

NGSS.MS-ESS1-4

Identify the era in which the first land plants appeared.

• Mesozoic

• Cenozoic

• Paleozoic

• Precambrian

Tags

NGSS.MS-ESS1-4

Which of the following periods is part of the Cenozoic era?

• Cambrian

• Ordovician

• Paleogene

• Silurian

What major event occurred at the end of the Cretaceous period?

• The formation of the first oceans

• The extinction of the dinosaurs

• The first appearance of reptiles

• The first appearance of amphibians

Tags

NGSS.MS-LS4-1

During which period did the first fish appear?

• Cambrian

• Ordovician

• Silurian

• Devonian

Tags

NGSS.MS-LS4-1