Population 4th Form
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Population 4th Form






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Population 4th Form Presentation Transcript

  • 1. Is it mybusiness? Sacred Heart College Social Studies Class 4B 2011
  • 2. Population is the total number of people living in a specific area at a particular time.World: 6,775, 235, 741(Updated 2009)
  • 3. Demography is the population to determine its characteristics such as size, composition, structure and distribution. Policy makers need demographic information to help them with zoning.  Health  Education  Housing  Social services  Welfare needs  Infrastructural development  Employment
  • 4.  An account and an analysis of a population. Usually done every 10 years. A census provides information on: a) Population size b) Number of persons in the labour force c) Number of persons employed and unemployed d) Male-female ratio e) Age/sex ratio f) Dependency ratio g) Educational attainment of members of the population h) Marital status of adults i) Religion j) Ethnic composition k) Migration levels
  • 5.  Population Growth is the increase in the number of persons in any given area. The rate of growth is determined by natural increase and migration. Resultant changes in the structure of the population – age and sex – will affect the economic development of the country. Census taken over a period of time indicates changes in population size and periods of growth.
  • 6.  Rapid Growth/expansive/broad-based Represents a young population (0-24years) – developing country. Slow Growth/constrictive Shows an aging population (50-60years) – represents a highly developed country. No Growth/stationary Youthful population, elderly population – denotes a developed country.
  • 7.  Crude birth rate= # of live births/1000 Crude death rate = # of deaths/1000 Natural Increase = increase brought about when birth rate exceeds death rate. Infant Mortality Rate = annual # of deaths/1000 infants Life expectancy = average # of years are expected to live
  • 8. YEAR POPULATION  Use the information provided in the SIZE (000s) table above to complete the following statements by filling in the blank spaces. 1911 831 • Between 1911 and 2001 the population of 1921 858 Jamaica increased by 1869 thousands. • The period between 1921 & 1943 was 1943 1237 the period of greatest increase. 1960 1610 • The period between 1911 and 1921 showed an increase of 27 thousands. 1970 1814 • The rate of increase for the period 1911 to 1982 2190 1921 was 3% [(27/831)*100]. • The rate of increase for the period 1991 to 1991 2381 2001 was 13% [319/2381*100]. 2001 2700Population size varies from country to There is a direct relationship between the population size and the economiccountry. development of a country .
  • 9. COUNTRY AREA (km2 ) POPULATION  Mark each of the following (000s) statements with True or False.Barbados 431 264  TRUE The country with the largest population is Jamaica.Belize 22,960 217  TRUE The country with the smallest population is Belize.Guyana 214,799 800  TRUE The country with theJamaica 11,424 2500 largest area is Guyana.  FALSE The country with theTrinidad and 5,128 1300 largest land area has theTobago smallest population. Population Size Population Size
  • 10.  Population Density is the number of persons per unit area of a country or region. Shows how populated an area is. Population density is calculated by dividing the population size by the land area. For example: Population of Belize = 217,000 Area of Belize = 22,960km2 Therefore the population density of Belize = 217,000/22,960 = 9 persons per km
  • 11.  Using the table in Activity 2, calculate the densities of the following countries:  Barbados = 612.5  Guyana = 13.7  Jamaica = 218.7  Trinidad and Tobago = 253.5
  • 12.  The distribution of population over the world’s surface is uneven. Some areas are densely populated while others are sparsely populated.
  • 13. WORLD POPULATION DISTRIBUTION (2000) 1 dot represents 100,000 people
  • 14. Geographic Distribution of Population Shows Population Growth Across Continents
  • 15.  The relief of the land Climate Fertile areas Location of mineral resources Developed areas Type of vegetation
  • 16. Use the information Table: Birth and death Rates for some Caribbean Countries: 1996.given to calculate Naturalthe natural increase COUNTRY Birth Death Rate/1000 Rate/1000 Increase/of each country and 1000complete the table. Trinidad and Tobago 18 6 12The first one has 6been done for you Barbados 15 9as an example. Belize 34 5 29 Dominica 15 7 8 Grenada 31 7 24
  • 17. Birth rates are affected by: Death rate is affected by: The number of women of child  Medical facilities/health care bearing age  Nutritional levels Norms within a society for family size  Economic prosperity/level of The economic conditions of a development country  Population structure The educational level (especially of Children) Availability and acceptance of family planning methods Government policy towards population control. BIRTH RATE DEATH RATE
  • 18. Infant mortality rate is obtained by calculating the number ofdeaths each year for every 1000 children under one year old.The life expectancy of a population is the average number of yearsthat persons in a given population are expected to live.Other Population CharacteristicsThe composition of a country’s population includes:  Sex ratio  Age distribution  Ethnic origin  ReligionThe age and sex distribution can be represented by a graph called apopulation pyramid such as the ones shown below for Mexico,Sweden and the United States of America.
  • 19.  Dependents: the persons in a population who are below the age of 15 and those older than 65 years. Those between the ages of 15 to 65 are referred to as economically productive. The term dependency ratio is used to describe the ratio of dependents to the economically productive group.
  • 20.  Overpopulated: the resources of a country are not sufficient to provide for the needs of the population. Under-populated: when the amount of resources available in a country can support a larger population. Optimum Population: the number of persons in a country will make efficient use of the available resources.
  • 21. Population Growth© Microsoft Corporation. AllRights Reserved.Microsoft ® Encarta ® 2008. ©1993-2007 MicrosoftCorporation. All rightsreserved.
  • 22.  Fall in death rates as a result of improvement in environmental sanitation and new discoveries in medicine. Lack of effective population education and population control methods. Under-development and use of natural resources.
  • 23.  It adds to:  Low standard of living  High crime rates in the less than 20 age group  High unemployment  Pressure on education, health and housing  Low per capita income
  • 24.  Improve education on population control methods Greater use of technology in areas such as agriculture to ensure greater productivity and employment The establishment of bi-lateral arrangements with developed countries to encourage the transfer of technology.
  • 25.  Caribbean countries realize that they must control population growth in order for economic development to take place. Families are encouraged to have fewer children through use of contraceptives. Raising awareness on consequences of increased population, Teaching family life education in schools.
  • 26.  Under-population occurs when the population is too small to utilize the population’s resources. Under-population can be caused by: o Natural causes: volcanic eruptions, floods, earthquakes. o Isolation & poor communication with the outside world o Inadequate social facilities and infrastructure o Lack of educational opportunities o Wars o Difficult terrain and lack of resources.
  • 27.  Depopulation is a condition that exists when an area loses its population as a result of:  People moving away as a result of famine caused by change in rainfall distribution and poor soil quality.  People moving in search of new pastures for animals.  A decline in the economic activity for example, agriculture and mining activities which has sustained the population.  An increase in criminal activities and violence, especially in inner city areas.  People being relocated because of increase mining activities, for example bauxite.  Political unrest and wars  Pollution associated with toxic wastes from manufacturing industries.
  • 28. Brathwaite, S and Reynolds, P. (2004). The Caribbean Secondary Education Certificate (CSE) Social Studies for Self Study and Distance Learning.Population Growth. Microsoft Encarta. 2008. 1993-2007 Microsoft Corporation. All rights reserved.Ramsawak, R. and Umraw, R. (1996). Modules in Social Studies, Caribbean Educational Publishers Ltd. Trinidad and Tobago