population of various age catagories in age-sex population pyramids. Helps to tell what stage a country is in.
formula that calculates population change. The formula finds the increase or decrease in a population. The formula is found by doing births minus deaths plus (or minus) net migration
demographic transition model
Stage 1: low growth
2: high growth
3: moderate growth
4: low growth
Stage 5 is not offically a stage but it is a possible stage that includes 0 or negative pop. growth.
# of people who are too young or too old to work compared to the # of people in their productive years. This tells how many people each worker supports.
# of years needed to double a population, assuming a sonstant rate of natural increase.
infant mortality rate
annual # of deaths of infants under 1 year of age, compared with total live births. Expressed as # of deaths among infants per 1000 births.
It helps tell how developed a country is.
when the projection population shows exponential growth.
Exponential growth means that more resources will be needed.
infant morality rate and life expectancy. The IMR reflects a country's health care system and life expectancy measures the average # of years a baby can expect to live.
(crude birth rate) the ratio of live births in an area to the population of that area; it is expressed as # of births in a year to every 1000 people alive in the society.
It tells you the rate of a country is habing babies as well as how fast you can expect that population to grow.
theory that builds upon Malthus' thoughts on overpopulation. Takes into count 2 factors: pop. growth in LDC's and outstripping of resources other than food
Gives another view on population changes.
when the # of people in an area is more than the area can support.
Shows how people are related to the amount of resources in an area.
frequency with which something occurs in space.
sudden increase in the population in either a certain geographical area.
Can tell when a country transitions into a new level
predicts the future population of an area. Helps predict future problems
population displayed by age and gender on a bar graph.
shows distribution of population
rate of natural increase
% by which a population grows in a year.
Crude birth rate - crude death rate= NIR
relates to growth and decline in the natural increase.
Zero population growth
when crude birth rate equals the crude death rate and the natural increase rate approaches zero.
space used for a certain industry or activity
relates to land use.
migration of people to a specific location because relatives or members of the sams nationality previously migrated there.
Shows on pattern of migration that affects the diversity of a country.
seasonal and nomadism. Leave a place, but return.
the dimnishing in importance and eventual disappearance of a phenomenon with increasing distance from its origin.
model that holds that the potentail use of a service at a particular location is directly related to the # of people in a location and inversely related to the distance people must travel to reach the service.
perminant movement within a particular country.
an environmental or cultural feature of the landscape that heps migration.
factors that convince people to leave old residence and move to new locations
person forced to migrate from their home country and cannot return for fear of persecution because of their race, religion, nationality, membership in social group, or political opinion.
series of small, less extreme location changes are steps
seasonal migration of live stock between mountains and lowland pasture areas.