Demographics.   Birthrate- number of live births per 1000 people  Ex. 54/100 in Niger, 8/1000 in Latvia, 22/1000 in world  Fertility rate- average.

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Presentation transcript:

Demographics

  Birthrate- number of live births per 1000 people  Ex. 54/100 in Niger, 8/1000 in Latvia, 22/1000 in world  Fertility rate- average number of children a woman of childbearing years would have in her lifetime if she had them at the current rate for her country  2.1 replaces population, 3.0 is average in world  Death rate- aka mortality rate, number of deaths per 1000  Low rate means a healthy population Important Terms

  Infant mortality : the number of deaths among infants under the age of 1 per 1000 live births  high IM rate usually means poor healthcare  Rate of natural increase: population growth rate  Mortality rate – Birth rate = Rate of natural increase  Population pyramid: device showing sex and age distribution of a population More terms

 Population Pyramid The PYRAMID on the left shows rapid growth The BOX shaped one in the middle shows slow growth The CUP shaped one on the right shows negative growth

  2/3 of world’s population lives between 20N and 60N  Suitable climate and enough moisture for agriculture  ½ world’s population lives in rural areas  ½ world’s pop. lives in urban areas (cities)  There are 20 megacities  Megacity - city with a population of more than 10 million Population Distribution

  Population density: # of people/mi 2 or # of people/km 2  Low density examples: Alaska 1 people/mi 2, Mongolia 6 people/mi 2  High density examples: New Jersey 1,098 ppl/mi 2, Singapore 16,714 ppl/mi 2  Carrying capacity: number of organisms a piece of land can support based on resources, space etc. Population Density

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