Changing population Flashcards
(48 cards)
Physical and human factors affecting population distribution at the global scale
Physical:
- Extreme climates (dry, high humidity)
- Water supply (clean, available)
- Vegetation (soil, greenland)
Human:
- Social/political instability (conflict, war)
- Economic (education, employment)
- Agriculture (crops, livestock)
Population distribution definition
The measure of how spread out a population is in any given area
Population density definition
The amount of people divided by the area in square kilometers
Economic development
The process where low-income national economies transform into modern industrial economies
How to measure development
GDP per capita
HDI
The happiness index
Emerging economies definition
A country in the process of developing its economy to become more advanced.
Migration 2 examples
International migration - different country (voluntary and forced)
Internal migration - same country
(interregional and intraregional)
Emigration
Migration from a location
Immigration
Migration to a location
Natural increase
Growth in population resulting in more births than death per year
The demographic transitioning model
Population change over time based on natural increase and decrease.
Crude birth rate formula
Total number of births per year/ total population x 1000
Total fertility rate
Number of births per 1000 women in childbearing age
Factors affecting fertility rates (high and low)
Improvements in health care
Contraception
Education - female literacy
LEDC - family work
Young marriage
Population momentum
Continued growth of a population even after fertility rates are down to replacment levels
Population projection
Estimate of what the population in the future will be like
What factors effect death rates
Gender
Age
Shelter
Access to food and water
Medical facilities
Case study: Gambia youthful population
- The Gambia is a small country in west Africa
- It has a rapidly growing population due to high rates of natural increase
Causes:
- Religious beliefs about contraception
- Woman dont’ have a voice on number of children
- Many children die young
- Help income (farming)
Impacts:
- Some schools have 3000 students with only 26 classes - no money to build more
- Trees are cut to make more space
Solutions:
-family planning (free contreseption)
- Better education
-More help from foreign country’s and organisations around the world
Case study: Japan elderly dependents
- Japan is a country in east Asia whith a population of more than 120 million people
Causes:
- Lots of elderly dependents because they eat healthy and do activities
- low natural increase
-
Impacts:
- hospitals don’t have space or medicine
- homeless, die alone, 1/3 suicide
- low pensions
Solutions:
- small part time jobs
- policies to increase birth rates
- allow economically active people to move in
Megacity
an area with the population of 10 million people or more
Negative consequences of megacities experiencing rapid growth
- strain on existing infrastructure
- housing shortage
- air pollution
- traffic congestion
Case study: Mumbai (megacity)
- Mumbai is located on the west coast of India.
- One of the largest cities in the world with a population of over 22 million people
- around 5% growth rate every year
- high natural increase
Pull factors from rural areas in india:
- better chance in job opportunities
- better school and hospitals
- Less natural disasters
Push factors:
- overcrowding
- traffic and pollution
-
Urban growth in HICs
- majority of the people already live in the cities
- 70% of the population live in urban areas
- slow rate of growth or decline in population