Human- Population Flashcards
What is death rate?
The number of deaths in a year per 1000 population
What is birth rate?
The number of live births in a year per 1000 population.
What is natural change?
The change in the size of the population caused by the balance between births and deaths. For every 100 people per year. It does not include the impact of migration. Expressed as a percentage.
What is the infant mortality rate?
The number of deaths of infants (1st birthday) in a year- per 1000 live births.
What is life expectancy?
The no. of years that a person in a given population can expect to live. Often this figure is broken down by gender because women tend to live longer than men.
What is net migration rate?
The difference between the numbers of in-migrants and out-migrants in an area.
What is fertility rate?
The average no. of children expected to be born to a woman over her lifetime- assuming she survives from birth to the end of her reproductive life.
What is population density?
The number of people living in a given area, usually in square km
What would you expect the vital rates to look like in a MEDC?
Low birth rate Low fertility rate Low death rate Low infant mortality rates High life expectancy
What is an example of a high statutory country?
Remote groups.
What are the features of a high statutory country?
High birth rate
High death rate
Natural increase is stable
What are the features of an early expanding country?
e.g. India
High birth rate
Rapidly falling death rate
Very rapid natural increase.
What are the features of a late expanding country?
e.g. China
Rapidly decreasing birth rate
Gradually decreasing death rate
More gradual natural increase.
What are the features of a low stationary country?
e.g. UK
Low birth rate
Low death rate
Stable natural increase
What are the features of a declining country?
e.g. Germany
Very low birth rate
Very low death rate
Decreasing natural increase
What does DTM stand for?
Demographic Transition Model
What is the DTM?
- A model showing the sequence of the relationship between birth rate and death rates and how it changes over time.
- Is based on the experience of the changes that took place in Britain and other industrialised countries during the 19th and 20th century.
- The model was purely descriptive. However, it is now predictive and it has been suggested all countries will pass through similar stages of population cycles.
What are the 5 stages of the DTM?
1) High statutory
2) Early expanding
3) Late expanding
4) Low stationary
5) Declining
What are the problems with the DTM?
1) Derived from a limited data base- European countries
2) Cannot predict total population as it doesn’t include migration
3) Doesn’t predict when transitions will occur or the length of the transitional periods.
4) Doesn’t consider government role e.g. one child policy.
5) Some LDCs death rate may never fall because of diseases like HIV/AIDS
What causes the changes in high statutory?
High death- limited medical care
High birth rate- limited access/ education on contraception
- Children are an economic advantage
Death rate fluctuates due to disease and famine
What causes the changes in early expanding?
Low death rate- Better access to health care
- Better nutrition
- Improved sanitation
High birth rate- Children are still an economic advantage due to early mechanisation
Population- increased difference between BR and DR
What causes the changes in late expanding?
Slowly decreasing death rate- Continuation of improved conditions
Decreasing birth rate- More education on contraception
- Children have less economic worth
Population- Difference between BR and DR is decreasing
What causes the changes in low stationary?
Low death rate- Continued improvements to lives
- Welfare provisions
Low birth rate- Children are expensive
- Changing views on family and greater independence of women
What causes the changes in declining?
Death rate has levelled out- Maximum medical advancements
Birth rate continues to decrease- Greatest choice and independence for women/ young couples
- Expense of children
Population- Possible natural decrease
When did the UK enter the different stages?
Stage 1- 1700
Stage 2- 1760 (60 years)
Stage 3- 1880 (120 years)
Stage 4- 1950 (70 years)
What was the UK like before stage 1?
Famine and plague like the Great plague of 1665 were common
What caused the UK to progress to stage 3?
- Rapid urbanisation in the 1870’s which alerted public officials and industrialists- public health acts of 1848 and 1869.
- Factory workers recognised that an unhealthy workforce was less productive.
- Clean piped water and sewage system reduced disease.
- Higher incomes led to better diets and improved transport and farming allowed the demand to be met
Why did the birth rate start to fall after 1875 in the UK?
Advances in science included more control of mortality and the development of contraception.
When did India enter the different stages?
Stage 1- 1910
Stage 2- 1950 (40 years)
Stage 3- 1980 (30 years)
Why did India move to stage 2?
- Independence from Britain in 1947
- Improved hygiene, public health and the modernisation of medical facilities decreased DR
Why did India move to stage 3?
- In less than 20 years, India’s population doubled and this particularly affected areas with a traditionally low population where land was over farmed resulting in soil erosion.
- The government introduced a series of birth control policies to stem population growth.
What is India like currently?
- Nearly 1 billion people
- Birth rate 29/1000yr and death rate 10/1000yr
- Life expectancy 59 years
- Literacy has doubled in the last 30 years.
- Population growth of 1.9% in 1997.
- 26% live in urban areas.
What is the population structure?
The proportion of males to females in an area usually in the form of age distributions.
What is a population pyramid?
The best way to illustrate the population structure. The vertical axis has the population in age band of 5 years and the horizontal axis shows either the total number of males and females as the percentage. It shows longevity by its height.
What are the three age groups?
Young dependents
Independents
Old dependents
What are some general facts about the UK population?
No. of over 65s set to increase by 1.4 million over the next 5 years.
Additional burden of £32 billion for pensions and nearly £40 billion for healthcare by 2014.
What are the economic advantages of an ageing population?
- 65+ spend an average of £4,500 a year in the shops.
- Retail market for over 65s will go from £37 to £64 billion in 10 years.
- Saga which caters for over 50s has trebled in profits in 5 years to £130 million in 2006.
What are the economic disadvantages of an ageing population?
- Higher taxes
- Raising deficit.
What are the political advantages of an ageing population?
- Over 65’s twice as likely to vote as under 25s therefore political parties have a wide selection of society to appeal to.
What are the political disadvantages of an ageing population?
- Overwhelm the coalition
- Conservatives may scrap winter fuel allowance and free bus passes
- Pension age would need to rise to 72 in 20 years to keep costs at the same level as in 1981
What are the social advantages of an ageing population ?
Grandparents save the UK £11 billion in childcare each year
What are the social disadvantages of an ageing population?
- Considering charging for the NHS
- 1/4 of home care services are not meeting all the quality and safety standards.
- People need to sell their homes.
What is the shape of a high statuary pyramid?
Concave
What shape pyramid is early expanding?
Straight sides
What is the shape of a late expanding pyramid?
Slower increase/ stationary
What is the pyramid shape for low stationary?
Stable/slow
Increase/contarctive
What is the dependency ratio?
- How many young people (under 16) and older people (over 64) depend on people of working age (16-64)
- The higher the number, the more people need looking after. LEDCs have a dependency ratio of 80+ while MEDCs have a dependency ratio of less than 70.
How do you calculate the dependency ratio?
% under 16 + % over 64. Then divide by the % between 16-64.
Dependents/ Independents
What is an ageing population?
A country in which the proportion of elderly people is increasing due to rising life expectancy and/or declining birth rates.
What is the case study for an ageing population?
UK
What is a case study for a youthful population?
Uganda
How much of Uganda’s population is under the age of 15?
50%
Why has Uganda’s dependency ratio increased?
- High fertility rate (7.1 in 1991)
- Low contraceptive prevalence
How does Uganda’s youthful population affect family welfare?
- Health of mothers and children is adversely affected by high fertility.
Early child bearing results in: - Lack of material resources affects initial development
- Encourages school drop-out
- AIDS risk increased