geography- population

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  • Created by: cutters
  • Created on: 19-03-15 19:53
what is population distribution?
the earth's population is unevenly spread across the earth surface.
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what is population density?
population density is the number of people per km squared
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where are the majority of the high population densitys?
in the northern hemisphere.
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what are factors that affect population density?
factors that affect population density are, a temperate climate, natural resources, fertile land, extreme climates, mountainous land and dense vegitation
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how is population changed over time?
population change has changed in many country's over time due to birth rates and death rates also immigration.
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what are population pyramids?
population pyramids show the structure of population, comparing relative numbers of people in different age groups. Population structures differ markedly
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what are demographic transition models?
Demographic transition models show population change over time - and also show marked differences between LEDCs and MEDCs.
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what do global population statistics show?
Until the 1800s the world's population grew slowly for thousands of years. In 1820 the world's population reached one billion. In the early 1970s, the world's population reached three billion. In 1999, less than 30 years later, the population doubled
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how do we measure population change by birth rates?
number of live births per 1,000 of the population per year.
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how do we measure population change by death rates
number of deaths per 1,000 of the population per year.
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how do we measure population change by migration?
the movement of people in and out of an area.
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what is natural increase in population?
birth rate>death rate. usally stage 4 on the demographic transition model
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what are the patterns of population growth?
MEDCs have low population growth rates, with low death rates and low birth rates. ledcs ahve a high birth rate and high death rates.
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what limits control over population change in LEDC's?
limited access to family planning, children are born to work and parents cannot keep them alive, women are treated traditionally.
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what happens to LEDC's when there is a youth buldge?
many children move to cities(urbanisation), children join terrorist organisations, no education for the young and not enough health care.
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Card 2

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what is population density?

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population density is the number of people per km squared

Card 3

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where are the majority of the high population densitys?

Back

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Card 4

Front

what are factors that affect population density?

Back

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Card 5

Front

how is population changed over time?

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