If Earth's history was condensed into one year, when would more complex plants and animals emerge?

• end of March

• late October

• mid December

• early June

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Define the Principle of Superposition.

• each rock is older than the above and younger than the one below

• layers of sediments are deposited evenly, each laid down almost horizontal

• an inclusion is older than the rock that contains it

• fossil organisms succeed one another in a definite irreversible order

Tags

NGSS.MS-ESS1-4

Define the Principle of Cross-cutting.

• each rock is older than the above and younger than the one below

• layers of sediments are deposited evenly, each laid down almost horizontal

• when intrusions cut through rock, the intrusions are younger than the rock

• fossil organisms succeed one another in a definite irreversible order

Tags

NGSS.MS-ESS1-4

An unconformity is caused by erosion or interruption in the deposition of sediments.

• True

• False

Tags

NGSS.HS-ESS2-5

________ Calculates the age of geologic material based on radioactive isotope decay.

• Half-life

• Radiometric dating

• Geologic time scale

• Relative dating

Tags

NGSS.HS-PS1-8

Absolute-dating techniques work best for sedimentary rocks.

• True

• False

How much of Earth's history makes up the Precambrian?

• 80%

• 70%

• 50%

• 60%

During which eon did the atmosphere consist primarily of carbon dioxide and water vapor?

• Archean

• Paleozoic

• Protorezoic

• Hadean

Which rocks of the Archean eon provide evidence that Earth's atmosphere began to accumulate oxygen?

• banded iron formations

• red beds

• cyanobacteria

• microcontinents

Which era is known as the time of "ancient life"?

• Mesozoic

• Paleozoic

• Cenozoic

• Phanerozoic