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 rapid growth 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 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 Famine Three Gorges Dam Migration Hurricane Katrina Refugees Afghanistan Refugees Partition of India Creation of Israel Palestinian Migration African America Migration to the North Dust Bowl Migration