AP® Human GeographyUnit 2: Population and Migration

Copyright © 2013 - All rights reserved - Daniel L. Eiland

Overview

Unit 2

Population

Migration

Part 1: Population

Sections

Where is Everyone?

Where has population increased?

Why is population

increasing at different rates?

Overpopulation

Section 1: Where Is Everyone?

What is demography?

Create your own definition:Demos (Greek for “People”) + graphe

(Greek for “to describe”)

What is population distribution?

“Population distributions are descriptions of locations on the Earth’s surface where individuals or groups live.”

In what places on Earth do you expect to find the most people living?

What common traits might these places exhibit?

What is ecumene?

“Ecumene is the portion of the Earth’s surface occupied

by permanent human settlement.”

Common Traits of Ecumene

Almost 90% of all people live north of the

equator.

More than half of all people live on about 5% of the land, and

almost nine-tenths on less than 20%.

Most people live in areas close to sea level.

About two-thirds of world population is concentrated within

300 miles of the ocean.

How do you measure population?

“You measure population by looking at Population Density;

the number of people occupying an area of land.”

• The total number of people in an area.• Population divided by Land Area

Arithmetic Density

• The number of people supported by a unit area of arable land.

• Provides insights into the relationship between the size of a population and the availability of resources in a region.

Physiological Density

• The ratio of the number of farmers to the amount of arable land.

Agricultural Density

Discuss how the agricultural density of the United States may have changed over the last 200 years.

End of AP® Unit 2 Power-Point Sample

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