Population and Migration Flashcards
(36 cards)
What is natural increase?
Difference between birth and death rates.
What is exponential growth?
Pattern where growth rate constantly increases in a J shape.
What is the difference between dense and sparse populations?
Dense has a high concentration of people, sparse has a low one.
What does NIC stand for and what are some examples of NICs?
Newly Industrialising Countries. For example India, China and Singapore.
What causes high birth rates in LEDCs?
Limited contraception, few women’s rights, dropping out of school, early marriage, the need for big families.
What causes high death rates in LEDCs?
Contaminated water, no access to hospitals, poor infrastructure (prone to damage; could trap, collapse, break on someone), dropping out of school w/o needed knowledge, unhealthy diet.
The global population distribution is very uneven. True or false?
True.
Why might weather cause counties to be sparsely populated?
People that work outside like farmers need good weather. Coldness prevents growing, hotness makes the soil thin. They will move somewhere that is more suitable.
Why is global population increasing?
Better living conditions and medical care. There is a natural increase happening.
What does DTM stand for and what is it?
Demographic Transition Model explains birth and death rate and global population patterns through time.
What happens on Stage 1 of the DTM?
High fluctuating, birth rates are high, death rates are high.
What happens on Stage 2 of the DTM?
Population increase, birth rates are still high like Stage 1, death rates start to decrease.
What happens on Stage 3 of the DTM?
Population increase, birth rates start to decrease a lot, death rates continue to decrease.
What happens on Stage 4 of the DTM?
Low fluctuating, birth rates stay low, death rates stay low.
What happens on stage 5 of the DTM?
Ageing and decline, birth rates are very low, death rates rise slightly.
What does replacement level mean?
For a sustainable population, couples could only have 2 children.
What is a sustainable population?
When a population structure doesn’t create problems for an areas future generations. There is an equal spread among all age groups.
What is an economically active age?
When you can earn money and pay taxes.
Who and what is the dependant population?
Those who don’t work and so need help form others; elderly and young.
What is a dependency ratio?
Difference between economically active and dependant population that helps identify future problems.
What does a LEDC population pyramid look like and what stage of the DTM are they at?
Wide base and narrow top (triangle) at Stage 1 and 2.
What does a MEDC population pyramid look like and what stage of the DTM are they at?
Narrow base and wide top (kind of onion) at Stage 4 and 5.
What does a population pyramid with a narrow top and wide base indicate?
High death rate, high birth rate, rapidly growing population and lots of young people to look after old.
What does a population pyramid with a narrow base and almost top heavy indicate?
Low and falling birth rate, low death rate, low infant mortality rate and ageing population.