Chapter 4-section-2-population geography

Chapter 4-section-2-population geography

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  Chapter 4, Section2 POPULATION GEOGRAPHY
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  OBJECTIVES To explain thefactors involved in the world’s population growth. To describe the distribution of the world’s population To describe factors that influence population density and carrying capacity
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  Worldwide Population Growth Question:does the world already have too many people? Can it support more? If so, where? Which people? 2008 = 6.6 Billion people (according to Wikipedia) QuickTime™ and a decompressor are needed to see this picture.
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  Population Geography Analysis Population Geographer - studies aspects affecting population Birthrate: number of live births per thousand population according to World Population : Congo is highest with 49.6 per 1000 and Singapore is lowest with 8.2 per 1000 Fertility Rate: average number of children per woman during childbearing years throughout lifetime according to CIA worldbook factbook: Mali is highest with 7.34 and Singapore is lowest with 1.08 --replacement rate: number of children each mother must have to maintain current population --estimated is 2.1 WHY might this figure be misleading? Is it more appropriate to analyze country levels rather than world?
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  Population Geography Analysis MortalityRate: number of deaths per thousand (also called the death rate) QUESTION--What would be an ideal or healthy mortality rate? Infant Mortality Rate: number of deaths among infants under age one per thousand live births QUESTION--What nations might you assume have a high infant mortality rate? Why? Low rate? Why? What factors affect this? according to the CIA Worldfact book the US has 6.3 per one thousand, ranking number 181--behind Cuba, most of Europe, South Korea, Japan, and Singapore…is this surprising? Why or why not? Other rates studied: perinatal mortality, maternal mortality, child mortality, standardized mortality rate
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  Population Geography Analysis Rateof natural increase: also known as the growth rate. Subtract mortality rate from the birth rate According to the CIA Wolrdfact book the US birth rate is appx. 14 per 1000 and the death rate is 8 per 1000. Rate of increase = Birth rate - Death rate = 14 - 8 = 6 per thousand
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  Population Pyramid  Agraphic device that shows sex and age distribution. See page 79 What does a higher elderly age rate mean for a community or society? Young age? What is most ideal?
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  Population Distribution Habitable Lands 90% of people live in Northern Hemisphere  Lands between 20 degrees and 60 degrees N latitude have very suitable climate and vegetation conditions = more dense human population  High population density in coastal regions and river valleys  Lower population density in polar regions, heavily mountainous regions, desert regions  More than 1/2 of world’s population lives in rural areas, but dramatically changing  Largest city in world = city (proper) = Mumbai, India at 13 million  Let’s look at map on page 80 QUESTION: What affect does a higher urban population have on society, nations, the world?
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  Population Distribution Migration 1.Push factors- factors causing people to leave homeland and migrate to another region Environmental conditions War Natural disasters Persecution 2.Pull factors - factors that draw or attract people to another location Good economy High salary Climate
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  Population Density Pop. Den.Is the average number of people who live in a measurable area (such as square mile or kilometer) How to calculate? Total number of inhabitants/total amount of land New Jersey has density of app. 1000 people per square mile and Australia has density of app. 6 people per square mile…what is misleading about these figures? Carrying Capacity: the number of organisms a piece of land can support QUESTION--What factors can increase carrying capacity?
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  REVISIT OUR GOALS Canyou:  Explain the factors involved in the world’s population growth  Describe the distribution of the world’s population  Describe some factors that influence population density and carrying capacity
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  Population Pyramid Assessment Students will select a country (the country of your choice more specifically), find data and draw a population pyramid. You may not trace, photocopy, whatever, whatever. This is to assess your knowledge and ability to gather information and formulate a graphic device. It must be of data from no earlier than 2006. Use page 79 as a guide. The pyramid should be neat, clean, organized, accurate. Use color as shown.  Due Monday October 20!!!  See rubric on-line