V-n graph
Classified in Geography
Written at on 
English with a size of 4 KB.
Introduction
A Populartion pyramid is a bar graph which shows a population structure by age and gender in a place at a specific period. This population pyramid corresponds to _____________ in ______________. The total population of this country/region/city is __________ inhabitants.
The vertical axis shows the population in ___________ years periods with the exception of the last group, which includes population over _____ years old.
The horizontal axis shows the values, usually expressed as a percentage of the total population. It can be also expressed in millions of people. The left side of the graph shows the number of males in each age group and the same happens in the right side of the bars with females.
Birth rate
This population pyramid shows a high/low proportion of the population between 0-14? years. This indicates a high/low birth rate.Ageing
Bars of young population are/are not much longer than bars of older population. This indicates __________________ (Country, region, city) has a young/ageing population.Gender
Bars of female population aged (65 and over) are little longer / longer than bars for the same group of male population. This indicates a longer life expectancy for women.Death rate. There are two options in this point:
- If you identify the population pyramid as an expanding pyramid you wil have to write this:
Bars are much shorter starting at age ranges in the middle and almost disappear at ages 85 and over. This indicates a low life expentanct and high death rate.
- If you identify the population pyramid as contracting pyramid you wil have to write this:
Bars are longer in the middle age ranges and remain quite long as age range increases. This means a high life expetancy and a low death rate. We can therefore predict a higher death rate in the future, because of a large older population.
- If you identify the population pyramid as an expanding pyramid you wil have to write this:
In conclusion, this is is an expanding pyramid. A significant natural increase can be predicted. A high birth rate ensures generational replacement. This is characteristic of less developed countries.
- If you identify the population pyramid as contracting pyramid you wil have to write this:
In conclusion, this is a contracting pyramid. A slow or negative natural increase is anticipated. A small young population and a large older population with a high life expetancy. Generational replacement is not guaranteed. This is characteristic of developed countries.