World Population Population Connection Video Population Connection Video

Demography The study of population -#’s -Ethnicities -Common characteristics -Distribution/ Density

Growth Rates Death rate: # of ppl that die every year per 1,000 Birth rate: # of ppl born every year per 1,000 Natural Increase (growth rate)= BR – DR

Growth Rates Life expectancy- average number of years ppl live w/ in a given population Fertility rate- # of babies a woman is expected to have in her life Infant mortality rate- # of deaths of infants under 1 yr. per 1,000 live births Child mortality rate- # of deaths of children ages 1-5 per 1,000

Growth Rates Doubling time: –# of yrs. it takes a pop. to double in size –Parts of Asia, Africa, Latin Am. = 25 yrs. –Wealthy countries = 300 yrs.

Nairobi, Kenya Mumbai, India Rapid growth leads to a demand on resources that often cannot be met…

Sudan Ethiopia Even more severe in places with extreme climates…

Growth Rates Zero Population Growth occurs when BR = DR –Usually happens only in wealthy countries –Most rural/poorer areas have tradition of many kids (farm work)

Negative Pop. Growth Occurs when DR > BR –Not enough workers –Labor must be brought in  problems b/w different cultures

Baby-O-Matic

Family Life: status of woman in household, ability to make decisions Education: More educ = fewer children, esp. for women Social Security: need more kids if no way to support themselves in old age Status Symbol: Large families can be seen as impt to culture; others, it’s personal success

Baby-O-Matic Time & $ Management: children are a drain on parents in some areas; an economic asset in others Health: with high chance of IM, ppl will have more kids as “insurance” Personal Beliefs: Society says if lg. or sm. is good; what shape is society in? Timing: Longer you wait = fewer kids; career minded ppl have fewer kids

Population Distribution Pop. Dist. = pattern of human settlement Due to inhospitable land, ppl only live on 1/3 of Earth’s land Ecumene= portion of earth occupied by permanent human settlement Need 3 things: –Available water, fertile soil, & a good climate

Population Density Pop. Dens.= ppl per sq. mile –Total population / total land area (arithmetic pop. dens.) Some countries have wide open areas= low pop. dens. Some are tinier countries= high pop. dens. –Ex: Belgium & Niger

In Bangladesh- one of most densely populated countries in world

Population Density Uneven distribution- not all land is usable –Egypt: 99% of pop. lives w/in 20 miles of Nile  the rest is desert –Use physiological pop. dens. = Total population / total arable land –181 ppl/sq. mile vs. 5,807 ppl/sq. mile

Migration Between countries: –Emigrants in home country –Immigrants in new country Reasons to leave: –Push vs. Pull Factors

Population Pyramids

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Demographic Transition Model Get out about 4 colors/highlighters