Geologic History Vocab

Front

Preserved remains or traces of living things.

Back

Fossil

Tags

NGSS.MS-LS4-1

Front

Numeric age of rocks or fossils, determined by radiometric dating.

Back

Absolute Age

Front

Describes the age of an object/event compared to another. No definite date.

Back

Relative Age

Front

All plant life in a region or period

Back

Flora

Tags

NGSS.MS-LS1-6

Front

All animal life in a region or period.

Back

Fauna

Front

Chronological collection of life's remains in sedimentary rock layers.

Back

Fossil Record

Tags

NGSS.MS-LS4-1

Front

Fossil used to date rock layers from a specific geologic age.

Back

Index Fossil

Front

In undisturbed rock layers, the bottom layer is the oldest and the top layer is the youngest (used to determine relative age).

Back

Law of Superposition

Tags

NGSS.MS-ESS1-4

Front

Categories of Earth's history: eons, eras, periods, epochs

Back

Geologic Time Scale

Tags

NGSS.MS-ESS1-4

Front

Study of rock layers and their event sequence

Back

Statigraphy

Tags

NGSS.MS-ESS1-4