Unit 2: Population & Migration Test Review

What does it look like?

Demographic Transition

Two Demographic Worlds

First is poor, young, and rapidly growing.• Less-developed countries.

– Africa, Asia, Latin America– Contain 80% of world population, and will

account for 90% of projected growth.

Second is wealthy, old, and mostly shrinking.

• North America, Western Europe, Japan.– Average age is about 40.– Populations expected to decline.

Interpreting a Population Pyramid

• Basically bar graph turned on its side.

•True pyramids are developing countries. Majority of population younger, not many people live to old age.

• Developed countries more rectangular; population spread more equally through age groups.

population pyramids

Three main types of pyramids– Rapid growth– Slow growth – Negative growth

Shape of rapidgrowth

Shape of Slow growth

Shape of negative growth

High, Slow & Negative Growth

Gravity Model Ravenstein’s Laws

Short Distances due to Distance

Decay

Longer Distances move from rural to urban

Step Migration

Rural to Urban

Counter Flow Migration: 1 IN 1

OUT

Adults move most.

Young people move

internationally.

Migration Selectivity

1. AGE: younger people between the ages of 18-30 are most likely to move

2. EDUCATION: People with higher education are most likely to make long-distance moves

3. KINSHIP & FRIENDS: People will follow families members that have moved to another area for a better life. CHAIN MIGRATION helped create cultural neighborhoods.

US Migration Waves

WAVE 1: 1840s, Northern and Western European

WAVE 2: 1840s-1900s, German and Northern European

WAVE 3: 1900s-present, South European, Eastern European, Asian, & Latin Americans

Great Migrations In History

Irish Potato FamineThree Gorges Dam MigrationHurricane Katrina RefugeesAfghanistan RefugeesPartition of India Creation of IsraelPalestinian Migration African America Migration to the NorthDust Bowl Migration