4.3 Geologic Time Scale Review

The Geological Time Scale is divided into eons, eras, periods, and___

• sections

• epochs

• decades

• time

Tags

NGSS.MS-ESS1-4

What does "Ga" stand for in geologic time?

• Thousands of years

• Millions of years

• Billions of years

• Hundreds of years

Tags

NGSS.MS-ESS1-4

What does "Ma" stand for in geologic time?

• Thousands of years

• Millions of years

• Billions of years

• Hundreds of years

Tags

NGSS.MS-ESS1-4

What are index fossils used for in geology?

• To determine the age of the Earth

• To identify the boundaries of geologic time divisions

• To measure the temperature of ancient climates

• To find the location of ancient seas

Tags

NGSS.MS-ESS1-4

During which eon did life begin in the form of photosynthetic bacteria?

• Hadean

• Archean

• Proterozoic

• Phanerozoic

Tags

NGSS.MS-LS1-6

Which gases were primarily present in Earth's atmosphere during the Archean Eon?

• Oxygen and nitrogen

• Water vapor, carbon dioxide, hydrogen sulfide

• Methane and ammonia

• Helium and neon

During which eon did stable continents first appear?

• Phanerozoic

• Proterozoic

• Mesozoic

• Cenozoic

Which era is known for the evolution of dinosaurs?

• Paleozoic

• Mesozoic

• Cenozoic

• Proterozoic

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which era is referred to as the "Age of Humans"?

• Paleozoic

• Mesozoic

• Cenozoic

• Proterozoic

What marks the boundaries between some geologic eras and periods?

• The Big Bang

• The Big 5 mass extinctions

• The Ice Age

• The Great Flood

Tags

NGSS.MS-ESS1-4