UNIT 2 =Population & Migration

1. a sudden growth in population brought by medical innovation of diseases or sickness.

2. A time when humans beings first domesticated plants and animals no longer relied entirely on hunting and gathering

3. agricultural revolution

4. demography

4.1. science that deals with populations and human beings

5. dependency ratio

5.1. A number of ppl who are too young t to old to work compared to number of ppl in their productive years

6. ecumene

6.1. civilization of the inhabited world.

7. emigration

7.1. leaving resident country with an intent to settle elsewhere.

8. epidemiological transition

9. epidemiology

9.1. a study of causes and effects of health and disease conditions in defined populations.

10. overpopulation

10.1. the total number of ppl on earth that also include the relationship between the number of ppl in availability of resources.

11. flood plain

11.1. a river is an area subject to flooding during a specific number of years based on historical trends.

12. counterbanization

12.1. A net migration from urban to rural areas

13. Crude birth rate

13.1. The total number of live births in a year for every 1000 ppl alive.

14. crude death rate

14.1. total number of deaths in a year for every 1000 ppl alive.

15. physiological density

15.1. The number of ppl supported by a unit area arable land.

16. natural increase rate (NRI)

16.1. percentage by which a population grows in year.

17. total fertility rate (TFR)

17.1. The average number of children a women will have throughout her childbearing years.

18. infant mortality rate (IMR)

18.1. annual number of deaths infants under one year of age compared to total live births.

19. life expectancy

19.1. at birth measures the average number of years a newborn infant can expect to live at current mortality levels.

20. medical revolution

20.1. medical technology invented in Europe and north America diffused to LDC's in Africa, Asia and Latin America.

21. sex ratio

21.1. the number of males per hundred females in population.

22. push factor

22.1. induces ppl to move to of their present location.

23. pull factor

23.1. induces ppl to move into a new location.

24. international migration

24.1. a permanent movement from one country to another

25. internal migration

25.1. a permanent movement within the same country

26. interregional migration

26.1. a movement from one region of a country to another

27. intraregional migration

27.1. a movement within a region