Unit 8.3 Earth's History

A principle that geologic processes that occurred in the past can be explained by current geologic processes.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

Tags

NGSS.MS-ESS2-1

The principle that states that all geologic change occurs suddenly.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

Younger rocks lie above older rocks, if layers are left undisturbed.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

Tags

NGSS.MS-ESS1-4

Faults or intrusions are younger than any layer of rock they cut through.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.

• Climate

• Ice Core

• Fossil Record

• Fossil

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

All fossils discovered on Earth.

• Geology

• Index Fossil

• Fossil Record

• Fossil

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-5

The weather conditions in an area over a long period of time.

• Ice Core

• Climate

• Relative Dating

• Fossil Record

Tags

NGSS.HS-ESS3-5

NGSS.HS-ESS2-4

A long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates.

• Ice Core

• Sea Floor Sediments

• Tree Rings

• Climate

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS3-5

Any method of determining whether an event or object is older or younger than other events or objects.

• Absolute Dating

• Radiometric Dating

• Relative Dating

• Prehistoric Dating

Any method of measuring the age of an event or object in years.

• Absolute Dating

• Radiometric Dating

• Relative Dating

• Prehistoric Dating

Tags

NGSS.HS-ESS1-6