Population Change Flashcards
What is natural decrease?
The death rate exceeds the birth rate.
What is zero growth?
A population in balance. Birth rate is equal to death rate, so there is no growth or decrease.
What is exponential growth?
A pattern where the growth rate constantly increases.
What is birth rate?
The number of babies born per 1,000 people per year.
What is death rate?
The number of deaths per 1,000 people per year.
What is natural change?
The difference between birth rate and death rate, expressed as a percentage.
What is life expectancy?
The number of years a person is expected to live, usually taken from birth.
On a graph, what does exponential growth look like?
A J curve
On a graph, what does zero growth look like?
An S curve which normally follows a J curve representing exponential growth.
Why might in one year the death rate of a country change dramatically?
There may be an epidemic flu, war or a famine/drought causing the death rate to increase significantly.
Why do we use natural change?
To see if a countries population is increasing of declining.
What is natural increase?
The birth rate exceeds the death rate.
What factors affect the level of DR? (7)
- Quality of the health care and medical facilities
- Nutrition levels
- Living standard
- Access to clean drinking water
- Hygiene levels
- Levels of infectious diseases
- Social factors such as conflicts and levels of violent crime
What are newly industrialising countries (NICs)?
These include the Asian ‘Tigers’ as well as other emerging industrial nations such as Malaysia, the Philippines and China.
What are the Asian Tigers?
One of the four East Asian countries of Hong Kong, South Korea, Singapore and Taiwan, where manufacturing industry grew rapidly from the 1960s to the 1990s.
What are the five stages of the demographic transition model?
1- High fluctuating 2-Early expanding 3-Late expanding 4-Low fluctuating 5-Natural decrease
What are the characteristics of stage 1 (high fluctuating) On a demographic transition model?
- High birth rate
- High death rate
- Both fluctuate because of disease, war and famine
- Low fairly stable population
What are the characteristics of stage 2 (Early expanding) On a demographic transition model?
- Death rate decreases
- Birth rate remains high
- Population grows
What are the characteristics of a stage 3 (late expanding) on a demographic transition model?
- Birth rate drops rapidly
- Death rate continues to decrease but more slowly
- Population still grows but not quite as fast
What are the characteristics of stage 4 (Low fluctuating) On a demographic transition model?
- Low birth rate
- Low death rate
- Birth rate tends to fluctuate depending on the economic situation
What are the characteristics of stage 5 (natural decrease) On a demographic transition model?
- Birth rate very low and goes below the death rate
- Death rate has slightly increased because of an ageing population
- Total population starts to decrease
Give an example of a stage 1 country.
There are no more countries, just traditional rainforest tribes
Give an example of a stage 2 country.
Afghanistan
Give three examples of stage 3 countries.
India, Kenya, Brazil
Give three examples of stage 4 countries.
USA, France, UK
Give three examples of stage 5 countries.
Italy, Germany and Japan.
What are the characteristics of stage 1 countries?
High fluctuating stage occurs in a society where there is little medicine, low life expectancy and no means of birth control.