L01 2010 the growth of world population

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L01 2010 the growth of world population

  1. 1. The Growth of World Population<br />
  2. 2. Key Terms<br />Population Distribution – How people are spread across the earth.<br />Population Density – The number of people living in a given area. Usually measured as people per square kilometre. <br />
  3. 3.
  4. 4. Key Terms<br />Birth Rate - A measure of an area’s fertility. It is expressed as number of live births per 1,000 people in 1 year. (Crude Birth Rate)<br />Death Rate – The number of deaths per 1,000 people in 1 year. (Crude Death Rate)<br />Life Expectancy – The average number of years from birth that a person can expect to live.<br />
  5. 5. Key Terms (con’t)<br />Longevity – the increase in life expectancy over a period of time. It is a direct result of improved medical provision and increased levels of economic development. People live longer and this creates an older population.<br />
  6. 6. Key Terms (con’t)<br />Natural Change – The change in size of a population caused by the interrelationship between birth and death rates. If birth rate exceeds death rate, a population will increase.<br />If death rate exceeds birth rate, a population will decline.<br />
  7. 7. Global Population<br />Growth in World population has not taken place evenly.<br />
  8. 8. World Population Growth<br />
  9. 9. Population Change<br />Components of Population Change:<br />Fertility (births)<br />Mortality (deaths)<br />Migration<br />
  10. 10. Measures of Fertility<br />Crude Birth Rate (CBR)<br />Total Fertility Rate – the average number of children born to a women during her lifetime.<br />Replacement Level Fertility –the level at which each generation has only enough daughters to replace themselves. Approximately 2.12 is replacement rate.<br />
  11. 11. Measures of Mortality<br />Crude Death Rate<br />Age-Specific Death Rate<br />Age- and Sex- Specific Death Rate<br />Infant Mortality Rate (IMR) – a measure of the number of deaths of infants before their first birthday per 1000 live births.<br />Life Expectancy – the average number of years a person can expect to live.<br />Maternal Mortality Rate – the number of women who die as a result of complications in pregnancy and childbirth. Measured per 1000 live births in a year.<br />
  12. 12. Causes of Population Growth<br />
  13. 13. Factors: Health<br />Control of Disease<br />Birth Control Measures<br />Infant Mortality Rates<br />Diet and Malnutrition<br />Numbers of Doctors and Nurses<br />Sexual Health<br />Sanitation<br />
  14. 14. Factors: Education<br />Health Education<br />Age at Which Compulsory Schooling Finishes<br />Females in Education<br />Levels of Tertiary Education<br />Literacy Levels<br />
  15. 15. Factors: Social Provision<br />Levels of care for the elderly.<br />Availability of radio and other media.<br />Clean water supply.<br />
  16. 16. Factors: Cultural Factors<br />Religious attitudes to birth control<br />Status gain from having children.<br />Role of women in society.<br />Sexual morality.<br />
  17. 17. Factors: Political Factors<br />Taxation to support services<br />Strength of the economy<br />Impact of war and conflicts<br />Access to healthcare and contraception.<br />
  18. 18. Factors: Environmental Factors<br />Frequency of hazards.<br />Environmental conditions that breed disease.<br />

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