sciences 5

social

What’s demography?

Demography is the study of population. Population means the total number of people that live in an area. The population of the world is more than 7 billion people.

Why does population change?

Population changes because people are born or die. The average number of children per family is called the fertility rate.

Population also changes because people move around. This is called migration.

How do we represent population?

We can represent population using graphs and charts.

a) is a pie chart; b) is a pyramid graph; c) is a line graph and d) is a bar chart.

What information do pyramid graphs give us?

Pyramid graphs give us information about population growth. They also give us information about age and gender distribution.

We can divide the population of a country into groups according to various factors, such as gender or age.

What population groups are there?

People that have a common language and culture form an ethnic group. This means that we can divide populations into ethnic groups, such as Chinese, Indian and Native American. We can also divide population into groups according to religion.

What’s the population of Spain like?

Spain’s population density is 91 per km2. In some areas, such as cities, there are many more people living in each square kilometre. In rural areas, there are a lot fewer.

Spain’s population has increased during the past century. Population growth was especially high from 2000 to 2011. In 2012 the population began to decrease.

There are 28 countries in the EU. As a result, the EU’s population contains many different ethnic groups, and 7% of the EU’s population are immigrants. The EU’s population is 52% female and 48% male.

What’s the population of Europe like?

The population density of the EU is 114 per km2. There are big differences between the population densities of EU countries.

What have we learnt?

line graphs pyramid graphs

We can represent population using …

pie charts bar charts

What have we learnt?

gender ethnicity

Population groups include …

religion age