Dani cruz (2 a) tema 13. The unequal distribution of the population

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A presentation made by Daniel Cordero, pupil of 2nd ESO (IES LLANES)

Transcript of Dani cruz (2 a) tema 13. The unequal distribution of the population

  • 1. The people in the planet

2. The inhabitants and their distribution

  • The population continue increasing. The inhabitants are distributed very different. There are huge countries with low population and small contries with high population. Well can compare the populations volume with the population density.

3. Distribution factors

  • Physical factors: Moderate temperatures, mountains with low altitude, fertile grounds minerals and water are good for the population. But, high temperatures, excessive humidity and high grounds are difficult for the population.
  • Historical factors:All the population in river and deltas valleys are inheritance from the past. The big empires used his power for cut down, build The almost Africa population died because there were a lot of slaves.
  • Economic factors:The population increases where there are many resources: minerals, activities
  • The urban areas attract a lot of population: economic activities, sevices, lots of jobs

4. Evolution of the world population

  • Evolution in the rich countries
  • Demographic stability:
  • During the XVII century the population increased very slow.
  • The families had five childrens, and lots of them died with one year old. The mortality was very high.
  • The crops were very unsafe, there were a lot of wars and catastrophes. The people died with maximum 40 years old.
  • Increasing population and demographic revolution.
  • When the industrial revolution started, everything was ok.
  • The catastrophic famines were disappearing for the aliments productions increase: new crops, jobs in the field, good grounds...
  • Process of the hygiene: There was coal at home, the people found soap and cotton clothes. The people were picking up the rubbish.
  • During there was a low mortality the birth rate went up. During the XVIII and XIX centuries, there was a demographic revolution

5. Decrease of the birh rate. In Eorupe and other countries, the mortality was decreasing, because there was medicines, vaccine and the figh agains the mortality of the childrens. The birth rate was decreasing for three causes: * The new condition of the life that impose an agrarian society to an urban society. * The desire to have a very good life and the high consumption * Protect the childrends, and like that they wont have illness, and have and education for them, that sometimes can be expensive. Evolution of population in the poorcountries. Demographic stability: Until the XXcentury.It had a very high mortality and birthrate Mortality decrease: The rich countrieshelp them for have more medicines andfor dont have diseases. 6. The unequal dynamic of the world population

  • Deceleration of the population
  • At the end of the XX century the experts said that well have an accelerated increase of people, but they were wrong.
  • Today, our world population is much lower because the general deceleration of the birth rate. In Africa,
  • they have a lot of diseases and this is
  • catastrophic.
  • Also, the fertility rate has decreased at
  • global scale. But, the population will
  • increase during the years.
  • A lthoughtheactualdynamics,there
  • is a decreasein the birth rates ofthe
  • world population, there arebig
  • differences between richandpoor
  • countries .

7. The population in rich countries The general characteristic of the population dynamic is his process of aging. The decrease of the birth rate because the fertility decrease. The reasons are a lot, but some of them are: its difficult to have an stable job, the wish to have a good life, difficult things for live in a block of flats A high life hope: They had better aliments, good doctors and with them, we had too many old people, and the people lived more. The population in poor countries Althought the fertility rate appears decrease slowly, the generalcharacteristic is the high birth rate. * The population is young andthere are lot of people with theage for have childrens * The increasing population needmore food, hospitals, schools, jobsand places to live. * In the countries that there arentold-age pensions or health services,and where the school isnt obligatory,the chlidrens always haverepresented a wealth for the families. 8. The population dynamics: The migration

  • The population dynamic also depends in the migrations:
  • Emigrate is leave a place where you were born during a long time.
  • The persons who lived their origins place are called emigrants.
  • The persons who are living in a city that it isnt their origin are called immigrant.
  • The migration settlement and his consequences
  • The migratory settlement is substract immigrant with emigrants, and it can be negative or positive.
  • Migratory negative settlement:A country has it when the country lose population. The consequences are:
  • It decrease the social pressure, abandonment of the rural areas and the emigrants send money to their families.
  • Migratory positive settlement:A country has it when it win population, and the consequences are:
  • Increase of adult population and wealth, high index of fecundity in the immigration proceeding from poor countries, economic contribution of the immigration and the immigration contributes cultural diversity.

9. The migrations right now

  • There is a type of emigration consisted of very qualified persons. These persons (investigators, sportsmen ...) are emigrants, but in this case, we speak about mobility of population.
  • However, they are caused by the fault of work and they proceed of:
  • Territories very filled with the south-east of Asia: they emigrate towards the nearest developed countries.
  • Proceeding emigration
  • of Africa: they look for
  • routes to come until
  • Europe, part of this
  • emigration is legal and
  • the other it isnt legal.
  • Proceeding from Europa's
  • countries of the East:
  • They have a
  • development
  • economic much lower.

10. The population pyramid

  • A pyramid of population or of ages is a graph that it show us to see, to understand and to
  • explain many of the characteristics that the
  • population of a country has.
  • The pyramid shows us the
  • history of the countrys
  • population: when a lot of
  • childrens were born, if a
  • catastrophe has suffered as
  • a war or an epidemic, if the
  • population has increased in a
  • moment because the strong
  • immigration.

11. The population and the work

  • Active population :
  • Well need need to know the poblations situation respects the work.
  • The active population is the population who works or who wants to work though it doesnt have job. It include also the occuped population, which gets a salary for his work, the population in unemployment and the people who look for a job.
  • The population that it isnt active: The boys, girls,pensioners, disabled persons for work The laboral activities arent active population, like the housework.
  • A goodindexformeasuringwealth
  • creationfor theworkis to calculate
  • theactivity rate. activity ratesare
  • higherinrich countriesandthe
  • lowest ratesare inpoor countries.

12. The productive sectors and the differences between countries The active population for productive sectors let us to know the degree of economic development of a country:In the rich countries, the percentage of active population in the primary sector is very low.In the industrial countries its usual to decrease the active population that its worked at the secondary sector, and in the developed countries, the tertiary sector grows. In the poor countries the half of the actual population is work at the primary sector. The problem of the unemployment The principal reasons of the developeds dispossession countries are: the mechanization, informatives of many tasks, close the companies. In the poor countries, the problem of the unemployment and the work is very usually. There, the active population is working at the agriculture, but the population grows very quikly and there arent lands for all. When they are like that, the population emigrates. In the poor countries there are very few working places. 13. Daniel Cruz Cordero 2*A