Unit 2 Flashcards
Population distribution
where people live in a geographic area
dispersed population
spread out
clustered population
grouped or clumped together around a central point
uniform population
spread out evenly over an area
linear population
appears to form long and narrow lines
population factors
climate, landforms, water bodies, culture, economics, history, and politics
climate
the long-term patterns of weather in a particular area
temperate climates
a climate with moderate temperatures and adequate precipitation amounts
landforms
the natural features of Earth’s surface
human migration
the permanent movement of people from one place to another
population density
the number of people occupying a unit of land
arithmetic density
the total number of people per unit area of land; also called crude density
physiological density
the total number of people per unit of arable land
arable land
land that can be used to grow crops
agricultural density
the total number of farmers per unit of arable land
subsistence agriculture
an agricultural practice that provides crops or livestock for only the farmers’ families and close community
carrying capacity
the maximum population size an environment can sustain
dependency ratio
the number of people in a dependent age group (under age 15 or age 65 and older) divided by the number of people in the working-age group (age 15 to 64), multiplied by 100
sex ratio
the proportion of males to females in a population
demographics
data about the structures and characteristics of human populations
fertility
the ability to produce children
crude birth rate (CBR)
the number of births in a given year per 1,000 people in a given population
total fertility rate (TFR)
the average number of children one woman in a given region will have during her child-bearing years (ages 15 to 49)
mortality
deaths as a component of population change
crude death rate (CDR)
the number of deaths in a given year per 1,000 people in a given population
infant mortality rate (IMR)
the number of deaths of children under the age of 1 per 1,000 live births