population Flashcards
Death Rate
the ratio of deaths to the population per thousand per year
Birth rate
the number of births to the population per thousand per year
life expectancy
the average period that a person will live
exponential growth
when the population is getting bigger than the size
infant mortality
deaths of children under the age of 1
baby boom
a rapid increase in birth rate
population density
how crowded an area is . population/area
population growth rate
the increase of population
what are three world locations with high population densities
west america, River Nile, east China
what are three world locations with low population densities
Sahara desert , Amazon Rainforest , Greenlamd
how does climate influence population density
Positive: Mild enough rain Negative: Too hot, Too cold Too dry
How does relief influence population density
Positive : flat or gently sloping land Negative: Mountains or steep land
how does access influence population density
Positive : coastal area , good transport Negative : inland no communications
How does vegetation influence population density
Positive: open grassland Negative: Dense forest , desert
how does economy influence population density
Positive: Plenty of industry and jobs Negative : Lack of industry and jobs
How does resources influence population density
Positive: Coal minerals timber Negative : Few or natural resources
How does soils influence population density
Positive : Deep fertile soil Negative : Thin infertile soils
What is a population pyramid
A pyramid to show distribution of various age g`roups and genders
What shape represents a high birth rate
pyramid
What shape represents a high death rate
pyramid
what shape represents a high life expectancy
rectangle
what shape represents a low life expectancy
pyramid
what is an example of a country in stage 5 of the DTM
Japan
What are positive effect of migration
- Do jobs locals don’t want to do
- Work overtime and any time
- might bring expertise in lines of work
- help local businesses make profit through low wage demands
- Local culture enriched
What are some negative effects of migration
- fewer job opportunities for local people
- racial tension problems
- might not learn language
- wage levels are possibly forced down
- overcrowding
What country is at stage one of the DTM
Rainforest
what country is at stage two of the DTM
Ethopia
What country is at stage three of the DTM
India
What country is at stage four of the DTM
UK
