Geologic Time Scale and the History of Earth

When did the first bacteria evolve?

• Cenozoic era

• Mesozoic era

• Precambrian

• Paleozoic era

Tags

NGSS.HS-ESS2-7

NGSS.HS-LS4-1

NGSS.HS-LS4-2

When did the first fish and amphibians appear in the fossil record?

• Mesozoic era

• Paleozoic era

• Cenozoic era

• Precambrian era

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What is the second longest time span in the geologic time scale? Examples are Paleozoic, Mesozoic, and Cenozoic.

• Eon

• Period

• Epoch

• Era

Tags

NGSS.MS-ESS1-4

The "Age of Mammals" that started 65 million years ago.

• Cenozoic Era

• Mesozoic Era

• Paleozoic Era

• Precambrian

Tags

NGSS.MS-ESS1-4

What are eras divided into? Examples are Cambrian, Jurassic, Crustaceous, and Tertiary.

• epoch

• era

• period

• eon

What is the shortest time span in the geologic time scale?

• era

• period

• epoch

• eon

Tags

NGSS.MS-ESS1-4

The entire history of the Earth can be divided into the Precambrian (ancient) Eon and the Phanerozoic (current) Eon. Which of the following correctly represents the percent of Earth's history occupied by each?

• 88% Precambrian, 12% Phanerozoic

• 12% Precambrian, 88% Phanerozoic

• 81% Precambrian, 19% Phanerozoic

• 19% Precambrian, 81% Phanerozoic

Which of the following best describes Earth’s very first atmosphere?

• helium and hydrogen gases left over from the formation of the planet

• carbon dioxide and water vapor from volcanic outgassing

• a 78%-21% nitrogen and oxygen gas mixture

• methane and ammonia gases from Earth's interior

Tags

NGSS.MS-PS1-1

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old
• 4.6 million years old

Tags

NGSS.MS-ESS1-4

What are eras divided into?

• eons
• periods
• epochs
• eras