Population Pyramids

We use population pyramids to represent the population of a country. They can tell us if most of the people are old, young, or in the middle.

Here is the population pyramid for Spain in 2014
:



We can see that there aren't very many young people,  We can also see other information. Who has a longer life expectancy, men or women?

The pyramid is wider in the middle. This means that the population gre rapidly in the past, but is now decreasing.

Here is the pyramid for United Kingdom in 2014. How is it different from Spain's?




Germany 2014:



Here is the population pyramid for Madagascar, home of our sister school in the project NAMANA:



Is this population growing or decreasing?  What about the life expectancy of the people?

Population pyramids can tell us a lot!

Population growth and density

2011 Census Spain:  pop. 47,190,494

Birth rate: 472,000

Mortality rate: 388,000

Immigrants: 457,000

Emigrants: 580,000

How many people died (per 1000)?

How many people left Spain to live in another country?

How many people came to Spain from another country?

How many babies were born (per 1000)?

Natural growth = birth rate- mortality rate

2011 census:

Birth rate: 472,000

Mortality rate: 388,000

The birthrate is higher, so there was positive natural growth.

But, we must also look at immigration and emigration to know if the total population increased or decreased.

How is the population distributed?

Questions:
Which areas are most/least populated?  Why?

How do we calculate population density?

What is rural exodus?