Themes and Models of Services AP Human Geography Urban Land Use Unit

For today, 04/20 Chapter 12 Reading Quiz is TODAY!  After the quiz, you will need your notes – we will be discussing the Themes and Models of Services

Development and Tertiary Employment

Types of Services Consumer Services: provides services to customers Examples: retail, education, health, leisure & hospitality Business Services: facilitate other businesses Examples: financial, professional, transportation Public Services: provide security and protection Examples: police, government

Specialization of Services Cancun, Mexico Las Vegas, USA

U.S. Growth Since the 1970s, U.S. has seen a decrease in the secondary sector and a sharp increase in the tertiary sector.

Clustering of Services Central Business District (CBD) 3 main types of services: high threshold, high range, servicing CBD workers Compact: small % of area, large % or services Visually distinctive One of oldest parts High land costs lead to skyscrapers

Christaller’s CPT showed that: (1.) Larger a settlement, fewer there are (2.) Larger a settlement, farther away a similar size settlement is (3.) Range increases as the population increases (4.) The larger the settlement, the higher the order of its services (5.) Exceptions exist: tourist resort and dormitory town Small pop, many functions & large pop, few functions

GM predicts the optimal location of a service is: The Gravity Model GM predicts the optimal location of a service is: (1.) Directly related to population - higher population = more potential customers (2.) Inversely related to range - farther away = less likely to use

OPEC Share of World Oil Reserves, 2013