ch. 2 vocab

Question Answer
Arithmetic Density The total number of people divided by the total land area.
Physiological Density The number of people per unit of area of arable land.
Agricultural Density The ratio of the number of farmers to the total amount of arable land.
Arable land Land suitable for agriculture.
Natural Increase Rate (NIR) The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.
Doubling Time The number of years it takes to double a population (assuming constant rate of increase)
Crude Birth Rate (CBR) The total number of live births per 1,000 people in a year.
Crude Death Rate (CDR) The total number of deaths per year for every 1,000 people in society.
Demographic Transition The process of change in society's population from a condition of high birth&death rates and low natural increase to a condition of low crude birth&death rates, low natural increase, and higher total population.
Overpopulation A situation in which the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living.
Total Fertility Rate (FTR) The average number of children a woman will have throughout her childbearing years.
Epidemiological Transition Distinctive cause of death in each stage of the demographic transition.
Epidemiology The branch of medical science concerned with the incidence, distribution, and control of disease that are prevalent among a population at a special time and are produced by some special cause not generally present in the affected locality.
Pandemic A disease that occurs over a wide geographic area and affects a very high proportion of the population.
Infant Mortality Rate (IMR) The total number of death in a year among infants under one year of age for every 1,000 live births in a society.
Life Expectancy The average number of years an individual is predicted to live.
Population Pyramid A bar graph that represents the distribution of population by age and sex.
Dependency Ratio The number of people under the age 15 and over the age 64 compared to the number of people active in labor force.
Elderly Support Ratio The number of working-age people (15-64) divided by the number of people 65 and older.