Define urbanisation
The rise in the percentage of people living in urban areas (towns and cities), in comparison with rural areas.
Describe the global pattern of urban change
Which continent has the highest rate of urbanisation?
Africa
What two factors affect the rate of urbanisation?
Define natural increase
When the birth rate in a country is greater than the death rate.
Define migration
The movement of population from one area to another. Some migrations are forced, voluntary, permanent and temporary, International and regional.
How is natural increase calculated?
Birth Rate minus Death Rate/100 (to express as a percentage)
Define rural to urban migration
The movement of people from rural to urban areas due to rural push and urban pull factors.
List three push factors
List three pull factors
What is a megacity?
A city with a population of 10 million people or more.
Name three megacities
Los Angeles, Mexico City, New York, Buenos Aires, Sao Paulo, Lagos, Karachi, Mumbai, Delhi, Kolkata, Dhaka, Jakarta, Metro Manila, Shanghai, Osaka, Tokyo.
Which two population factors combine to produce megacities?
Migration + Natural Increase
Which continent has the largest number of megacities?
Asia
Describe the location of Rio de Janeiro
Rio de Jeneiro is a city located in the country of Brazil. Brazil is a country in South America.
22.9068° S, 43.1729° W
Give a reason to explain why Rio is an internationally important city
Give a reason to explain why Rio is a nationally important city
Why has Rio de Janeiro grown as a city?
City growth in Rio de Janeiro is prevented by which physical factors?
There are mountains to the north and west, and sea to the south and east.
How is Rio’s housing segregated?
How has urban growth created opportunities for Rio?
Describe the social challenges facing Rio
1. Health care - just over half of the city has access to a local health clinic.
2. Education - half of all children continue their education after 14. Many become involved in crime.
3. Water supply - 12% of Rio’s population did not have access to running water.
4. Energy - shortage of elecricity = powercuts
Describe the economic challenges facing Rio
1. Unemployment - 20% of those living in favelas are unemployed.
2. Lots of people working in the informal sector - they don’t pay taxes, don’t have insurance and are poorly paid.
3. Crime - Robbery and violent crime are big challenges.
Describe the environmental challenges facing Rio
1. Air pollution - causes 5,000 deaths per year in Rio
2. Traffic congestion - caused by few roads due to mountain landscape and more people owning cars.
3. Water pollution - Guanabara Bay is highly polluted causing a threat to wildlife. Caused by pollution from favelas and industrial waste.
4. Waste pollution - it is difficult to get waste collection lorries into the steep sided streets of the favelas