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Chapter 1: Measuring Populations. So far. World Population. Current Population Clock 21:00 UTC (EST+5) Sep 02, 2012 World 7,036,815,592 seven billion thirty-six million eight hundred fifteen thousand five hundred ninety-two 17:53 UTC (EST+5) Sep 13, 2012 World 7,039,111,459 - PowerPoint PPT Presentation
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Chapter 1: Measuring Populations
Chapter 1: Measuring PopulationsSo far.....World Population
Current Population Clock
21:00 UTC (EST+5) Sep 02, 2012
World 7,036,815,592seven billion thirty-six million eight hundred fifteen thousand five hundred ninety-two
17:53 UTC (EST+5) Sep 13, 2012
World 7,039,111,459seven billion thirty-nine million one hundred eleven thousand four hundred fifty-nine
Future trends
Population distribution?
Population density?The average number of people livingin a square kilometre of land
How do you calculate populationdensity?
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Factors effecting population distribution and densityPhysical and human factors affect where people live (distribution) and how many people live in a region (density).
Climate
Relief
Soils
Drainage
Resources
5. Resources:
Areas with many resources (e.g. Europe)tend to have higher population densitiesthan areas with few resources (e.g. Sahelof Africa).Regions with mineral deposits or energysupplies attract industry
Mineral deposits have often led to thedistribution of people to unfavourableregions. For example, settlements in desertregions in central Australia only exist becauseof gold mines. Large settlements can also befound in northern Sweden where iron ore.
Human factors....GovernmentSocio-economicHistoric6. Government
Stable political systems(e.g.Europe)-Tend to have high populations-Democratic Governments offering peace, justice and good servicesUnstable political systems(e.g.Afghanistan)-Tend to have low populations-They experience political conflict whichcauses emigration
Government policy can also have an impact on population distribution.
For example, the settlement of theAmazonian rainforest in Brazil
This settlement is due to:
The construction of the capital city Brasilia
(B) Government resettlement schemesenticing people to this previously sparsely populated region
7. Socio-economic
Areas experiencing economic growth havehigh population densities as they offer jobs andbusiness opportunities
People flock to these regions. This trend can alterthe population distribution. As people move to aneconomic core region (e.g. Greater Dublin Area)its population grows but the donor regionspopulation lowers (e.g. Poorer rural peripheralregions in the west).
Religious factors have an affect on population distributions: -The Mormons in the USA tend to settle in Utah to be close to others practising the same faith.-The Amish community in Pennsylvania, USA tend to live in more isolated areas.
8. Historic:
Events in history have shaped the distribution patterns of people across the world:
Conquest and colonisation of the Americas in the 1500s resulted in mass European migration to the sparsely populated North and South Americas
The Plantation brought Scottish and Welsh people to Ireland
The Great Famine forced a great number of Irish to emigrate to the USA and Britain
Exemplar Exam questions...Regions can be defined by many factors i.e. Economic, Human and PhysicalExplain how any one of the above factors has defined an Irish Region studied by you.
Describe and explain, using examples which you have studied, the difference between the terms population density and population distributionFactors Affecting Population Distribution and DensityPopulation GrowthKey terms:Birth Rates: The number of live births per thousand of a population
Death Rates/ Mortality Rates: The number of deaths per thousand of a population
Natural Increase: The difference between birth rates and death rates. Birth rates are higher than death rates
Natural Decrease: Death rates are higher than birth rates
Factors influencing death rates and birth ratesSocial, Cultural and Economic factors influence birth rates and death rates
Education and status of women
Standard of living
Government policy
Religion Society and customs
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