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Unit 3 IB ESS EXAM questions with complete solutions
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Unit 3 IB ESS EXAM questions with complete solutions
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Unit 3 IB ESS EXAMbirth rate calculations - correct answer ✔✔Number of births in a year ÷ total population x 1000
standardized birth rate calculation - correct answer ✔✔birth rate for a region on the basis that its age
composition is the same as the whole country
Total fertility rate - correct answer ✔✔The average number of children born to a woman during her
childbearing years.
doubling time - correct answer ✔✔time it takes for a population to double in time
70/percentage growth rate
crude death rate - correct answer ✔✔The number of deaths per year per 1,000 people.
numbers deaths/1000 people in each year population
Infant mortality rate - correct answer ✔✔The percentage of children who die before their first birthday
within a particular area or country.
pyramids - correct answer ✔✔wide base=high birth rate
narrowing base=falling birth rate
straight or near vertical sides reveal a low death rate
concave slopes = high death rates
bulges in slope=high rates of immigration
, deficits in slope=emigration, war, epidemic
Demographic transition model (DTM) - correct answer ✔✔shows the change in population structure
from LEDCs to MEDC
Stage 1: High and variable - correct answer ✔✔birth rates and death rates are high and variable
population growth fluctuates
no countries, only some indigenous tribes are at this stage
Stage 2: Early expanding - correct answer ✔✔birth rate remains high but the death rate comes down
rapidly
population growth is rapid
Afghanistan, Sudan, & Libya
Stage 3: late expanding - correct answer ✔✔birth rate drops and death rate is low
population growth continues but at a smaller rate
Brazil & Argentina
Stage 4: Low and variable - correct answer ✔✔birth and death rates low and variable
population growth fluctuates
Stage 5: low declining - correct answer ✔✔birth rate is lower than death rate
population declines
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