Published on: Mar 4, 2016
Transcripts - Population 120918105857-phpapp01
OBSERVE THESE PICTURES
POPULATION: Number of people who live in an area.
There are different ways to classify the population
We can classify the population by age
people who are
sixteen to sixty-
four ( 16-64)
people who are
sixty-five or older
There are two types of population:
Rural populations Urban populations
People live in small
villages or towns
People live in large
People work and earn a
People who are unemployed
but they are looking for a job.
People don´t work and don´t
earn a salary (not legal
working age, people who are
ill and so on).
We can classify the population by economic activity:
The number of inhabitants in a place changes
are born die
arrive or leave to another countries..
• Census is a survey of all the people in the country.
If we look at the birth rates, the death rates and the
inmigration and emigration we will see that the
population can increase or can decrease.
Positive natural increase
More people are born than
die. The population grows.
Negative natural increase
More people died that are
born. The population
There are people who leave their homes to live in
another place. This is called migration
Why do they leave their homes?
Natural causes: Floods, Social factors: War, political
earthquakes, droughts and religious problems or
some problems to find
TYPES OF MIGRATION
Internal migration: People leave their homes within
the same country.
Why people leave their homes?
The number of jobs in rural areas decreases.
Young people find better opportunities to study,
work and live in cities.
International migration: people migrate from one
country to another
WHAT´S THE DIFFERENCE?
– Emigrants: People who leave a country.
– Immigrants: People who arrive in another country.
Some countries and regions are more populated than
others because of
a healthy climate and
Population density shows us how populated an area is.
We calculate the population density by dividing the
total number of inhabitants by the size of the area they
High population density Low population density