1 / 27

Population Pyramids

Learn how to interpret population pyramids and understand what they reveal about a population's age and gender distribution. Explore population structures of developing and developed countries through graphical analysis. Identify the characteristics of LEDCs and MEDCs. Compare birth rates, death rates, and factors influencing population demographics.

wesleyn
Download Presentation

Population Pyramids

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Population Pyramids Learning Objectives: To be able to identify key features of a population pyramid and describe what they show about a population. Starter: Word Match next slide.

  2. Starter: Match up the key words with the correct definitions.

  3. Starter: Match up the key words with the correct definitions.

  4. Starter: Match up the key words with the correct definitions.

  5. Can you explain this graph?

  6. Population Structure • The population structure of a country is how it is made up of people of different ages, and of males and females. • The common method to show the structure is by a population pyramid. This diagram is made up by putting two bar graphs (one for male, one for female) side by side. • From this you can read off what percentage of a population is of a certain gender and age range.

  7. Population Structure - Developing Countries (LEDCs) • In the example below 4% of the population are females aged between 25 and 29.

  8. This population pyramid is wide at the base, which means there are a large proportion of young people in the country. It tapers very quickly as you go up into the older age groups, and is narrow at the top. This shows that a very small proportion of people are elderly. • This shape of pyramid is typical of a developing country, such as Kenya or Vietnam.

  9. Population Structure - Developed Countries (MEDCs) • This shape is typical of a developed country. It is narrow at the base, wider in the middle, and stays quite wide until the very top, as there is a sizable percentage of older people. Note that there are more old women than men. Italy and Japan have population structures that are of this shape.

  10. Progress? • 8-10 statements correct • 5-7 statements correct • 1-4 statements correct Learning Objective 1. To be able to identify the key features of a population pyramid.

  11. Task 1 – Identify key features Narrow at the top which shows that there is a small proportion of elderly people. Wider in the middle which means that people are living longer, less infant mortality. Wide at the top because there is longer life expectancy. 4% of the population is female aged 25-29. Developing Country (LEDCs) Developed Country (MEDCs) Wide at the base which means there are a large proportion of young people in the country. This pyramid is typical of a country such as Kenya or Vietnam. This pyramid is typical of a country such as Italy and Japan. Narrower at the base which means that birth rates are lower.

  12. Choropleth Map to show Global Birth Rates

  13. Birth Rates MEDCs have low birth rates because: • It is expensive to look after large families • More women prefer to concentrate on their careers • Increasing sexual equality has meant women have more control over their own fertility • There is a ready availability of contraception and family planning advice

  14. Birth Rates • LEDCs have high birth rates because: • Many parents will have a lot of children in the expectation that some will die because of the high infant mortality rate • Large families can help in looking after the farm • The children will be able to look after their parents if they become old or sick; there may not be an old age pension scheme • There may be a shortage of family planning facilities and advice

  15. The infant mortality rates are higher in LEDCs. The reasons for these higher rates are that developing countries often have: • A shortage of medical services • A greater number of children born to mothers • Poor nutrition of mothers and babies • Less knowledge of health matters • Dirty water supplies • The chances of surviving to your fifth birthday depends on where in the world you are born.

  16. Death Rates

  17. Why are there differences between Birth Rates and Death Rates in different countries? • LEDCs have high death rates because, in many cases, there are: • Dirty, unreliable water supplies • Poor housing conditions • Poor access to medical services • Endemic disease in some countries • Diets that are short in calories and/or protein • MEDCs have low death rates because, in many cases, there are: • Good housing conditions • Safe water supplies • More than enough food to eat • Advanced medical services which are easy to access • Some developed countries have a high death rate as they have an ageing population with many older people.

  18. PEE Chains • POINT • EVIDENCE • EXPLAIN • CONCLUSION • Write a PEE paragraph for LEDC Birth Rates

  19. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base. The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  20. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base. The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  21. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base. The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  22. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base. The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  23. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base. The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  24. PEE Chains LEDCs have high birth rates. This can be seen on the graph as it shows a wide base.The graph of Kenya shows 18% of the population is aged 0-4. This is because in rural areas families choose to have lots of children so that they can help on the farms. This is typical of an LEDC as most have high birth rates.

  25. Task 2 - Explain the population pyramids for LEDCs and MEDCs LEDCs LEDCS have a high/low life expectancy. This can be seen on the graph because it shows a wide/narrow base. The graph of K_ _ _ _ shows _ % of the population is aged 80-84. This is because ....

  26. MEDCs MEDCs have a low/high birth rate. The graph shows this because it has a narrower/wider base. The graph of J _ _ _ _ shows _ % of the population is aged 0-4 years old. This is because ....

More Related