Demography ppt2
- 1. DEMOGRAPHY
- 2. What is Demography? ā¢ It is the scientific study of population. ā¢ Comes from the Greek words ādemosāand āgraphoneā meaning āmeasuring people.ā ā¢ It studies the size and consistency of the human population and how it changes.
- 3. What is Population? ā¢ It is the area of sociology that includes the size, growth, demographic characteristics, compositions, migrations and etc. ā¢ To geologists, it is the number of persons occupying a certain geographic area, drawing sustsistence from their habitat and interacting with one another.
- 4. Why Study Population? ā¢ It is important to study population because it allows sociologists to find the causes of sudden growth or decrease in population size in a certain area as well as how it will affect the society. ā¢ If a populationās growth is slow, it faces the danger of extinction. ā¢ If a population grows too fast there would be upheaval and conflict over scarce resources within the society itself.
- 5. Why Study Population? ā¢ The study of population and its trends would give direction towards the formulation of plans for education, employment, housing, transportation and communication and other forms of social services.
- 6. Sources of Demographic Data Census: ā¢ It is a population count where the demographic, economic and social data of every individual of a given time are collected, tabulated, compiled and published. Vital Statistics: ā¢ Events that deal with an individualās life from birth to death.
- 7. Sources of Demographic Data Sample Surveys: ā¢ These are conducted by private and public institutions to obtain data and information on matters not covered by the census or the vital statistics system.
- 8. Composition of a Population Age composition: ā¢ It pertains to the comparative percentage of individuals a different age levels influencing the economic and social structures of society. Sex composition: ā¢ It pertains to gender differences which is determined by sex ratio and is affected by births, deaths and migration incidences.
- 9. Elements of Demography Birth Rate: ā¢ It is the yearly count of live births per 1000 population; gives data on a societyās reproductive patterns Total Fertility Rate: ā¢ The average count of children conceived; can project a societyās future population growth
- 10. Elements of Demography Death Rate: ā¢ The yearly count of deaths per 1000 population; gives the data on societyās mortality patterns Life expectancy ā¢ The average number of years a person is expected to live
- 11. Elements of Demography Growth Rate: ā¢ Differences between births and deaths plus the differences between immigrants and emigrants per 1000 population
- 12. Causes of Rapid Population Growth Birth Rate: ā¢ Around the world, more than 4 babies are born every second. ā¢ If high fertility is not matched by mortality, then overpopulation is bound to happen. Death Rate: ā¢ A decline in mortality and a more or less stable birth rate means a rise in population
- 13. Causes of Rapid Population Growth Migration: ā¢ Population change is likewise affected by migration which is the movement of people from one place to another with intention of finding a permanent residence. It has been observed that the main reason why people migrate is economic
- 14. Consequences of Rapid Population Growth ā¢ Economic Consequences ā¢ Social Effects ā¢ Political Effects ā¢ Consequences for Education ā¢ Health, Welfare and Child Development ā¢ Environmental Deterioration ā¢ Security Problem