Geologic Dating

The Earth is ______________ of years old

• hundreds

• thousands

• millions

• billions

Tags

NGSS.MS-ESS1-4

What is the longest, largest unit of time called?

• Eon

• Era

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

What is the second longest unit of geologic time?

• Eon

• Era

• Period

• Day

Tags

NGSS.MS-ESS1-4

What is the third longest unit of geologic time?

• Eon

• Era

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

A ___________ help to date rock layers by having lived for a short amount of time, being abundant, being widely distributed, and easily recognizable.

Why are Volcanic eruptions important to the geologic time scale? choose all that are correct...

• cause mass extinctions

• can be used to absolute date strata

• make new roads for fossils to travel on

• Law of Intrusions

Why are meteorite impacts important to the geologic time record?

choose all that are correct

• Alter life and Earth's history

• Make a layer of special dust on the Earth for us to use radiometric dating

• may cause extinctions if large enough

• are pretty

Tags

NGSS.HS-LS4-5

Humans see the oldest layers on the bottom and the youngest on the top (choose two)

• Radiometric dating

• Relative dating

• radioactive dating

• Law of superposition

Tags

NGSS.MS-ESS1-4

Humans can find exact times or very close to it for a strata

• Law of Intrusions

• Radiometric dating methods

• Law of Superposition

• Relative dating

How did Humans choose how units of time were broken up and named on the geologic time scale?

Tags

NGSS.MS-ESS1-4