Geologic Time Scale

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

Tags

NGSS.MS-ESS1-4

The geologic time scale is a record of....

• the history of fossils only
• the history of rocks
• the history of rock layers and fossils
• geologist notes

Tags

NGSS.MS-ESS1-4

Paleontologists infer that the earth is approximately how many years old?

• 4.5 million years
• 450 million years
• 450 billion years
• 4.5 billion years

Tags

NGSS.MS-ESS1-4

The end of an era, and the end of life for groups of organisms, is called?

• Death

• Mass extinction

• Transition

• Turning point

Tags

NGSS.MS-LS4-1

Which era best represents when humans first appeared on Earth?

• Cenozoic

• Mesozoic

• Archean

• Hadean

Tags

NGSS.MS-LS4-2

A unit of geologic time that subdivides eras

• period
• time span

Tags

NGSS.MS-ESS1-4

Scientists often use "mya" as an abbreviation for

• Molecular Yields of Absolute

• Meters You Access

• Millions of Years Ago

• Money You should Accept

The oldest eon is

• Hadean

• Cenozoic

• Phanerozoic

• Archean

Tags

NGSS.MS-ESS1-4

Which Eon is nicknamed "Rockless Earth"?

• Hadean

• Phanarezoic

• Proterozoic

• Archaean

Which Eon did the single-celled bacteria evolve?

• Hadean

• Phanarezoic

• Proterozoic

• Archaean