Ch. 9 Key Terms

Question 1

Demography

Answer 1

Demography is the study of populations. For human populations,demographers study the processes that influence the populations of countries tomake comparisons and predictions

Question 2

age structure

Answer 2

age structure —the distribution of ages in a specific population at a certain time.

Question 3

Survivorship

Answer 3

Survivorship is the percentage of members of a group that are likely to survive to any given age.

Question 4

fertility rate

Answer 4

fertility rate, or the average number of children a woman gives birth to in her lifetime

Question 5

migration

Answer 5

The movement of individuals from one area to another is migration

Question 6

life expectancy.

Answer 6

The average number of years members of a population are likely to live is their life expectancy.

Question 7

demographic transition

Answer 7

The demographic transition is a model that de-scribes how economic and social changes affect population growth rates.

Question 8

Infrastructure

Answer 8

Infrastructure is the basic facilities and services that support a community, such as public water supplies, sewer lines, power plants, roads, schools, and hospitals

Question 9

arable land

Answer 9

arable land, which is land that can be used to grow crops.

Question 10

urbanization

Answer 10

urbanization, the movement of people from rural areas to cities

Question 11

least

developed countries

Answer 11

least
developed countries. These countries show few signs of development and in some cases have increasing death rates while birth rates remain high.Least developed countries are officially identified by the United Nations using three criteria: low income, weak human assets, and economic vulnerability.