Unit Two - Population Flashcards
what is crude death rate ? (CDR)
the total number of deaths in a year for every 1,000 people alive in the society
what is crude birth rate ? (CBR)
the total number of live births in a year for every 1,000 people alive in the society
what is cohort ?
a group of people that characteristics them as a group ; age, sex, race.
what is dependency ratio ?
the number of people too old and too young to work compared to the number of people that are in their productive years.
what is demographic transition ?
the process of change in a society’s population from high crude birth and crude death rates and low natural increase rate to a condition of low crude birth and crude death and a low natural increase rate resulting in higher population.
HIGHbirth+HIGHdeath+LOWnat.inc. ->
LOWbirth+LOWdeatg+LOWnat.inc. =
higher total population
what is doubling time ?
the number of years needed to double a population, assuming a constant rate of natural increase.
what is ecumane ?
the portion of earth surface occupied by permanent human settlement.
who is Thomas Malthus ?
an english geographer/economist that theorized that there were too much people and not enought food to sustain everyone.
what is sex ratio ?
the number of males per 100 females.
what are the four major population clusters ?
East Asia, South Asia, Europe, and Southeast Asia.
what are four sparsely populated regions ?
dry land, wet land, cold land, high land.
what is non-ecumane ?
the portion of earths surface not occupied by permanent human settlement.
what is arable land ?
land suited for farming.
what are the three ways density can be calculated ?
arithmetic density, physiological density, and agricultural density.
what is density ?
the number of people occupying an areas of land.
