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44 Cards in this Set
- Front
- Back
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describe the population growth from 1800 - now.
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until the 1800s the worlds population grew steadily. in 1820 the worlds population reached 1 billion. 150 years later, in early 1970s the worlds population reached 3 billion. in 1999 less than 330 years later the population doubled to 6 billion. the global rate of population growth is now very fast rising by 1 billion per 15 years.
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what is exponential growth?
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the term used to describe rapid increase.
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the population of an area alters as a consequence of what?
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natural change (birth rate and death rate) a migration.
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a population grows if the birth rate is higher than the death rate. what is this?
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natural increase.
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what is a natural decrease?
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when the death rate is higher than the birth rate.
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what is population change?
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changes in population over a given period. it takes into account both natural change and migration.
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what is birth rate?
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the number of lie births in one year per 1000 population - a measure of an areas fertility.
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what is death rate?
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the number of deaths in one year. per 1000 population.
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what is fertility rate?
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the average number of children born to women in their reproductive life.
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what is migration? |
the movement of people into (immigration) or out of (emigration) in an area.
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what is natural change?
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the difference between births and deaths.
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what is longevity?
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long life.
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what is the birth rate in stage one of the demographic transition model?
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high
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what is the death rate like in stage one of the demographic transition model?
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high
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what is the natural increase like in stage one of the demographic transition model?
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low
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what is the birth rate like in stage 2 of the demographic transition model?
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high
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what is the death rate like in stage 2 of the demographic transition model?
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decreasing
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what is the natural increase link in stage 2 of the dtm?
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becoming high.
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what is the birth rate like in stage 3 of the dtm?
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decreasing
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what is the death rate like in stage 3 of the dtm?
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low
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what is the natural increase like in stage 3 of the dtm?
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high becoming low.
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what is the birth rate like in stage 4 of the dtm?
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low
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what is thae death rate in stage 4 of the dtm?
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low
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what is the natural increase like in stage 4 of the dtm?
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low.
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what is the birth rate like in stage 5 of the dtm?
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low
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what is the death rate like in stage 5 of the dtm?
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low
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what is the natural increase like in stage 5 of the dtm?
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natural decrease.
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what are the population pyramids associated with?
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the different stage on the democratic transition model.
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what do ledc have more of on the population pyramid?
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more youthful people on the bottom of the pyramids whereas medcs have more people on the top of the pyramid.
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if one cohort is smaller than the one below it could be explained by what?
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an increase in birth rate, an increase n death rate, migration, any combination of the above.
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what are population pyramids able to record and summarise?
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a lot to do with the demography of a country.
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what is a dependency ratio?
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a sum that allows governments to judge how many people of working age they have relative to how many people are said to be dependant.
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what is a dependant person?
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a person who cannot fund for themselves or who relies upon others to maintain their well being.
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what do dependant groups include?
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some disabled people, the very young and the very old. (0 - 14) (65+)
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countries with a dependacy ratio close to 1 have high dependency what do they have?
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1 peoson of working age for every dependant person.
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what does it mean when a country had a 0.5 dependency ratio?
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its better because there are 2 working age people for every 1 dependent person to cater after.
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what is a census?
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population survey.
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what can a high dependency result from?
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high number of children and elderly people.
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how is a dependency ratio calculated?
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(% population under 15 x %population over 65 / % people working age) x 100
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2 examples that improve the quantity and quality of schooling?
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education, lowering fertility rates.
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2 examples that enact and enforce laws to prevent early marriage before 18?
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stay in school longer, easier to get jobs
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2 examples that bring the job market into the 21st century?
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better job prospects, ease barriers to starting work.
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1 example that expand and reinforce family planning programmes?
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especially in the most disadvantaged areas.
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1 example that encourage young peoples participation in public life.
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programs and services that are directed at then.
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