Periods of Time
Terms Used with Dates
Study of the Past
Geography
100

a period of 10 years

Decade

100

a term used to identify dates that occurred long ago, before the birth of Jesus Christ

BC

100

a part or an imprint of something that was once alive.

fossil


100

 the study of the earth's physical and cultural features

Geography

200

a period of 100 years

Century

200

a term used to identify dates that occurred after Jesus' birth. Latin phrase: "in the year of our Lord"

AD

200

objects created by and used by humans

artifacts

200

the natural features of the land's surface. Examples include: mountains, valleys, and plains.

landforms

300

a period of 1,000 years

Millennium

300

another way to refer to BC dates; it stands for "before the common era"

BCE

300

the study of the past

History

300

the pattern of weather conditions in a certain area over a long period of time.

climate

400

from a time before people recorded history

Prehistoric

400

another way to refer to AD dates; it stands for "common era"

CE

400

the study of the past based on what people left behind

archaeology

400

the two main branches of geography 

physical geography & human geography

500

old, or from a long time ago

Ancient

500

a word used to show that historians are not sure of an exact date; it means "about"

circa or c.

500

the knowledge, beliefs, customs, and values of a group of people

culture

500

materials found in the earth that people need and value

resources