Unit 2: Population & Migration Vocabulary 2024 (copy)

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arithmetic density

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25 Terms

1

arithmetic density

The total number of people per unit of land; also called crude density.

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2

physiological density

the total number of people per unit of arable land

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3

sex ratio

the proportion of males to females in a population

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4

dependency ratio

the number of people in a dependent age group (under age 15 or over the age of 65) divided by the number of people in the working-age group (ages 15 to 64), multiplied by 100

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5

total fertility rate (TFR)

average number of children one woman in a given country or region will have during her childbearing years, which are ages 15 to 49.

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6

life expectancy

an average number of years a person is expected to live

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7

crude birth rate (CBR)

the number of births in a given year per 1,000 people in a given population

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8

doubling time

the number of years in which a population growing at a certain rate will double.

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9

population pyramid

a graph that shows the age-sex distribution of a given population

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10

crude death rate (CDR)

the number of deaths in a given year per 1,000 people in a given population

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11

natural increase rate (NIR/RNI)

rate at which a population grows as the result of the difference between the crude birth rate and the crude death rate

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12

overpopulation

a term used to describe the condition in which population growth outstrips the resources needed to support life

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13

EPIDEMIOLOGICAL Transition Model (ETM)

a model that describes changes in fertility, mortality, life expectancy, and population age distribution, largely as a result of changes in causes of death

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14

Demographic Transition Model (DTM)

A model that represents shifts in the growth of the world's population, based on population trends related to birth rate and death rate

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15

pronatalist

describing attitudes or policies that encourage childbearing as a means of spurring population growth

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16

gravity model

a model that predicts the interaction between two or more places

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17

forced migration

type of migration in which people are compelled to move by economic, political, environmental, or cultural factors

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18

step migration

series of smaller moves to get to the ultimate destination

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19

chain migration

type of migration in which people move to a location because others from their community have previously migrated there

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20

transhumance

the movement of herds between pastures at cooler, higher elevations during the summer months and lower elevations during the winter

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21

internally displaced person (IDP)

person who has been forced to flee his or her home but remains within the country's borders

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22

interregional migration

movement from one region of the country to another

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23

quota

limit on the number of immigrants allowed into the country

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24

remittances

money earned by an emigrant abroad and sent back to his or her home country

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25

brain drain

the loss of trained or educated people to the lure of work in another—often richer—country

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