Earth Time Scale

When classifying time using the Geologic Time Scale which unit is the largest unit of time?

• Period

• Eon

• Epoch

• Era

Tags

NGSS.MS-ESS1-4

The Mesozoic Era is found in which Eon?

• Phanerozoic

• Precambrian

Earth is thought to be formed ______ years ago?

• 200 thousand

• 3 million

• 4.6 billion

• who knows

Tags

NGSS.MS-ESS1-4

During this period Earth was flowing with lava, the core was unstable, and was the first Era of the Precambrian Eon.

• Paleozoic

• Hadean

• Archean

• Cenozoic

What Epoch of the Geological Time scale are we currently in?

• Holocene

• Paleocene

• Hadean

• Jurassic

Tags

NGSS.MS-ESS1-4

During the Precambrian Eon all of the events happened except.

• Fish began to evolve

• Single cell organism like bacteria developed

• Earth was flowing with lava and their was not oxygen in the atmosphere.

• The Proterozoic Era was at the end of Precambrian Eon

Tags

NGSS.HS-ESS1-6

NGSS.HS-LS4-1

NGSS.HS-LS4-2

During what Period were Dinosaurs present?

• Paleogene

• Quaternary

• Precambrian

• Jurassic

Tags

NGSS.MS-LS4-1

During this Era Pangaea was being formed?

• Paleozoic

• Mesozoic

• Cenozoic

• Phanerozoic

What two methods are used to divide and classify the geological time scale?

• Living organisms

• rock strata or layers

• DNA

• fossils

Tags

NGSS.MS-ESS1-4

Put the following units of geological time in order from largest to smallest unit of time.

• Epoch, Eon, Era, Period

• Epoch, Period, Era, Eon

• Eon, Era, Period, Epoch

• Period, Eon, Period, Era

Tags

NGSS.MS-ESS1-4