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Population F.Ciangura.

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Presentation on theme: "Population F.Ciangura."— Presentation transcript:

1 Population F.Ciangura

2 Population distribution
The population of the world is unevenly spread Some places are densely populated = crowded Some places are sparsely populated= few people live in an area F.Ciangura

3 World population density
North America Europe Asia Africa South America Australia F.Ciangura

4 In the past most people used to live in the countryside.
Today more than half of the world’s population lives in cities. Cities provide housing, jobs, medical care, education and entertainment. The fastest growing cities are found in poorer countries like Mexico City, Sao Paolo and Lima. If you are connected to the internet click on the following link to see how cities have grown in time F.Ciangura

5 How to calculate the population density of a place?
Population density = the number of people living in an area the area e.g. the Population of Malta is 404,039 and it is 316 km2 So, the population density of Malta is: Pop density = people = ,039 = persons/ km2 area F.Ciangura

6 has the highest population density in Malta because many people live
The Grand Harbour Area has the highest population density in Malta because many people live close together in a small area. Problems of high population density include: Traffic jams, Loss of natural environment, Pollution, Eye sores, Stress, Loss of wildlife, Accidents. F.Ciangura

7 Maltese Population Density 1995 Local Councils
Legend (persons per km2) The Grand Harbour Area has the highest population Density because many people live here. There are many jobs, flat gentle-sloping land, good transport links, and near the main harbours. F.Ciangura

8 What affects where we live?
NEGATIVE FACTORS – sparse population Desert Dry- no rain and no rivers Dense Forest No jobs No industry Few raw materials Poor soils Steep, cold mountains F.Ciangura

9 POSITIVE FACTORS – dense population
Gentle sloping hills Near a river jobs Good communications Good soil Near port Pleasant climate Food supply Open grasslands Raw materials F.Ciangura

10 Where do we live? F.Ciangura Western Europe- Densely populated
Himalayan Mountains – Sparsely populated Sahara Desert – Sparsely populated Bangladesh- Densely populated Amazon Forest- Sparsely populated Polar regions- Antarctica – Sparsely populated F.Ciangura

11 Western Europe- Densely populated
Low lying Pleasant climate Good water supply Good soil for farming Good communications and many resources for industry Bangladesh- Densely populated Flat land Rich, fertile soil Hot and wet Very good farming F.Ciangura

12 F.Ciangura Sahara Desert –Sparsely populated
Amazon Forest- Sparsely populated Too hot and dry for people Dry soil Sand makes communications difficult Too hot and wet for people Dense forest makes communications and settlement difficult Polar regions- Antarctica – Sparsely populated Himalayan Mountains- Sparsely populated Too cold Very steep slopes make communication and settlement difficult Thin soil Too cold for people No soil Snow and ice make communication and settlement very difficult F.Ciangura

13 F.Ciangura

14 How does the population change?
Birth rate more than death rate Birth rate less than death rate Birth rate same as death rate Population increase Population stays the same Population decrease F.Ciangura


16 High birth rate and high death rate Population stays the same
POPULATION EXPLOSION GRAPH High birth rate and high death rate Population stays the same High birth rate but death rate is low due to improved living conditions, medicines, education, food Population Increases F.Ciangura

17 Migration Types of migration Migration is when people move home
a) RURAL–TO–URBAN MIGRATION Leaving the countryside to go to work and live in the city b) INTERNAL MIGRATION e.g. leaving Floriana to go to live in Qawra (in the same country) F.Ciangura

Moving from one country to another e.g. From Malta to Australia d) SEASONAL / TEMPORARY MIGRATION Changing home for some time only . E.g. going to live at Bugibba only in summer F.Ciangura

19 Why do people migrate? Pull Factors Push Factors F.Ciangura

20 Push Factors Unhappy life Natural disasters Not enough jobs
Shortage of food wars Push Factors Political fears F.Ciangura

21 Pull Factors Pleasant environment education Better housing
Family links jobs Better way of life exploration Medical care F.Ciangura

22 What is the American Dream ?
When people go to America to find better jobs, education medical care, entertainment, more freedom and opportunities. F.Ciangura

23 Many Mexicans migrate to USA to look for jobs. They are mostly
Seasonal migrants since many go to USA to pick fruit. F.Ciangura

24 What are the effects of migration?
Good effects Bad effects Cause problems Migrants take the jobs of local people Racism Vandalism They use the country’s health and social services Migrants do jobs that locals do not want to do Many migrants are willing to work long hours Mix ideas Mix cultures F.Ciangura

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