Geography. October 29, Monday.

Transcription

1 Geography October 29, Monday.

2 Today s Chunks of Learning. Chunk 1: Urbanization and Megacities. Chunk 2: Urbanization and City Designs.

3 On Friday We finished by talking about primate cities as part of Urbanization. Do you remember what they are?

4 Chunk 1: Urbanization - Megacities. Central and South America are also home to many megacities.

5 Urbanization - Megacities. A megacity is a city with a population of more than 10 million people.

6 Urbanization - Megacities. Urbanization creates megacities as more people migrate to cities from rural areas to look for jobs.

7 Urbanization Megacities. How does this happen? A) People move to cities to find jobs. B) The more people move to a city, the more services they require. C) So more jobs, and more people needed to fill those jobs.

8 Urbanization - Megacities. Mexico City. 22 million people.

9 Urbanization - Megacities. Sao Paulo, Brazil. 21 million people.

10 Urbanization - Megacities. Buenos Aires, Argentina. 13 million people.

11 Urbanization - Megacities. Rio de Janeiro, Brazil. 13 million people.

12 Urbanization - Megacities. Bogota, Colombia. 10 million people.

13 Urbanization - Megacities. Lima, Peru. 10 million people.

14 Urbanization - Megacities. Which continent has the most megacities? North America. South America. Europe. Asia. Africa.

15 Urbanization - Megacities. Asia currently has 21 out of the 35 megacities in the world.

16 Chunk 2: Urbanization The CBD model of cities. As Central and South American cities grew, they developed along a similar design.

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18 There is a central business district (CBD) or main market at the heart of the city.

19 Why a CBD? That s the heart of the city. That s where all the big and important businesses and shops are. And it puts them close to government offices.

20 As industrialization occurred, additional industrial and commercial development extended along the spine, which might be a major boulevard.

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22 Why would it make more sense to put all the big industries along the same road? For supplies and transportation.

23 The spine is often connected to major retail area or mall.

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25 Why? So it s easier for the industries to ship their products to stores.

26 Surrounding the commercial area of the spine is housing for the rich, elite of the city. These are often high rise condos.

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28 Why live there? A) To be closer to the downtown cultural venues. B) To be closer to their offices. C) They can afford second houses out in the country, if needed.

29 Around the CBD is the zone of maturity, an area of middle class housing.

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31 Why? Because the middle class would like to move up to the luxury condos. Because they would prefer to be closer to the rich than the poor.

32 The zone of in situ accretion is a transitional area from the modest middle class housing of the zone of maturity to the slums of the city s poorest residents.

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34 This is the new middle class. Maybe they just moved up from the slums.

35 The outermost ring in a typical Latin American city is the zone of peripheral squatter settlements.

36 In this zone, residents do not own or pay rent and instead occupy otherwise unused land, known as squatting.

37 Why? Because that s all they can afford.

38 Disamenity sectors arise along highways, rail lines, or other small tracts of unoccupied land where the city s poor often live out in the open.