6.4 (Pgs. 382-387) Flashcards
Urban systems
An interdependent st of cities that interact on the regional, national, and global scale.
Rank-size Rule
Describes one way in which the sizes of cities within a region may develop. States that the nth largest city in any region will be 1/n the size of the largest city.
High-order services
Expensive, need a large number of people to support and are occasionally utilized.
Low-order services
Less expensive than higher-order services, require a small population to support, and are used on a daily or weekly basis.
Primate Cities
If the largest city in an urban system is more than twice as large as the next largest city, the largest city is said to have primacy.
Gravity Model
States that larger and closer places will have more interactions than places that are smaller and farther from each other.
Central Place Theory (CPT)
Proposed in 1933 by Walter Christaller to explain the distribution of cities of different sizes across a region.
Central Place
As a location where people go to receive goods and services.
Market Area
A zone that contains people who will purchase goods or services, surrounds each central place.
Hinterland
The shape was a compromise between a square - in which people living in the corners would be farther from the central place - and a circle - in which there would be overlapping areas of service.
Threshold
The size of population necessary for any particular service to exist and remain profitable.
Range
the distance people will travel to obtain specific goods or services.
^ Limitations of CPT
The model assumes that it is a flat featureless plain. It does not consider the influence of transportation systems, as well as how the availability of those types of transportation can expand the market area.
^ Expected changes in US cities by 2040
Experts predict that immigration will likely continue, making the population more diverse. Voluntary segregation will likely continue, and the number of ethnic neighborhoods will flourish.
^ Expected changes in megacities in Asia and Africa by 2040
The megacities of these places will likely get even larger. The increasingly dense concentration of people will increase the impacts of deadly epidemics, natural disasters, environmental changes, immense pollution, criminal networks, terrorist activity, and civil unrest.
