Is it mybusiness? Sacred Heart College Social Studies Class 4B 2011
Population is the total number of people living in a specific area at a particular time.World: 6,775, 235, 741(Updated 2009)
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
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
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.
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.
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
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 .
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
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
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
The distribution of population over the world’s surface is uneven. Some areas are densely populated while others are sparsely populated.
WORLD POPULATION DISTRIBUTION (2000) 1 dot represents 100,000 people
Geographic Distribution of Population Shows Population Growth Across Continents
The relief of the land Climate Fertile areas Location of mineral resources Developed areas Type of vegetation
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
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
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.
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.
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.
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.
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
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.
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.
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.
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.
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