Presentation on theme: "AP HUMAN GEOGRAPHY CHAPTER 5 CLASS NOTES"— Presentation transcript:
1 AP HUMAN GEOGRAPHY CHAPTER 5 CLASS NOTES Processes and Cycles of Population Change
2 The Population Explosion of the 20th Century 2.5 million years for the world’s pop. to reach 1 Billion,Only 200 more years to reach 6 billionKey to reducing population growth rates?WOMEN!!!educationrights
9 Pick a Side Neo-Malthusian: Supports ideas of Malthus Inevitable stage in historyHuman suffering greater than M. predictedAnti-Malthusian: not in agreementFood production not linear> has become exponential as wellCultivated land increasedNew seeds and fertilizers used (biotech, yield)
10 Natural Increase (pop.) ??? Difference between # of births and # of deaths in a periodCrude Birth Rate (CBR): live births per year per 1,000Crude Death Rate (CDR): # of deaths per ,000 (mortality rate)
11 High Birth & Death Rate High BR: S. Asia, SW Asia, Sub-Saharan Africa (50 per 1000)Highest DR:AfricaDeteriorating health conditionsNo AccessInfant Mortality Rate: ???die before 1st BDay
12 Low Birth RateLow BR: Europe (15 per 1,000), N. America, Australia, China, JapanLow BR =modernization, industrialization, urbanization, education (women)
13 Total Fertility Rate (TFR) # of children born to women of child bearing ageTFR’s are declining all over the worldChina’s fell from 6.1 to 1.7 in just 30 yearsA TFR of 2.1 is needed to maintain stable population over time (60 countries below)
18 Demographic Change Formula To figure out the total POP. change TP = OP + B – D + I – ETP : total populationOP: original populationB: birthsD: deathsI: ImmigrationE: Emigration
19 Living Old… DEPENDENCY RATIO – Ratio of # of people either too old or too young to provide for themselves to the # of people who must support them through their own laborn : 100n = the number of dependents
20 POPULATION PYRAMIDS (“Age – Sex” Pyramids) Instantly conveys the demographic situation in a countrySee what age group (of M & F) has what share of the population
21 POPULATION PYRAMIDS (“Age – Sex” Pyramids) World POPULATION What does this tell us???
29 Demographic Transition (Cycle) 4 STAGES MODEL Development : BR / DR(Based on Europe Model of Growth (UK))1. High Stationary Stage –high fertility (BR), high mortality (DR), little long term POP growthFarming, Mining(poor, underdeveloped countries)
40 Key Questions…Why Unwise to assume that ALL countries’ growth follows DTCM (Europe)?Stationary Population Level (SPL) (DTM Stage 5?)World’s pop. will stop growing in 21st Cen. (Will Stabilize)Why??? How???