AP Human Geography Chapter 2

238144058	Population Density	A measurement of the number of people per given unit of land.
238144059	Arithmetic Population Density	The population of a country or region expressed as an average per unit area.
238144060	Physiologic Population Density	Number of people per unit area of arable land.
238144061	Population Distribution	Description of locations on the Earth's surface where populations live.
238144062	Dot Map	Maps where one dot represents a certain number of phenomenon such as population.
238144063	Megalopolis	Term used to designate large caolescing supercities that are forming in diverse parts of the world
238144064	Census	A periodic and official count of a country's population.
238144065	Doubling Time	Time required for a pop. to double in size
238144066	Population Explosion	Rapid growth of the worlds human population during the past century.
238144067	Natural Increase	Population growth measured as the excess of live births over deaths.
238144068	Crude Birth Rate (CBR)	Number of live births yearly per thousand people in a population.
238144069	Crude Death Rate (CDR)	Number of deaths yearly per thousand people in a population.
238144070	Demographic Transition	Multistage model, based on Western Europes experience, of changes in population growth exhibited by countries undergoing industrialization.
238144071	Stationary Population Level	Level at which a national pop. ceases to grow.
238144072	Population Composition	Structure of a population in terms of age, sex, and other properties such as marital status and education.
238144073	Population Pyramids	Visual representations of the age and sex composition of a population whereby the percentage of each age group is represented by a horizontal bar the length of which represents its relationship to the total pop.
238144074	Infant Mortality Rate	A figure that describes the number of babies that die within the first year of their lives in a given pop.
238144075	Child Mortality Rate	A figure that describes the number of children that die between the first and fifth years of their lives in a given pop.
238144076	Life Expectancy	A figure indicating how long, on average, a person may be expected to live.
238144077	AIDS	Immune system disease caused by the Human Immunodeficiency Virus (HIV) which over a period of years weakens the capacity of the immune system to fight off infection so that weight loss and weakness set in and other afflictions.
238144078	Chronic Disease	Generally long lasting afflictions now more common because of higher life expectancies.
238144079	Eugenic Population Policies	Gov. policies designed to favor one racial sector over others.
238144080	Expansive Population Policies	Gov. policies that encourage large families and raise the rate of pop. growth.
238144081	Restrictive Population Policies	Gov. policies designed to reduce the rate of natural increase.