Where is AIDs? Where do we find hunger? Where are American blacks? Where are cows produced?

Describing Distributions

Describing Distributions Discuss concentration and density using map

Tobler’s 1st Law of Geography All things are related. However, all other things being equal, those things that are closest together are more related. Distance Decay

Diffusion: Relocation is different than Expansion

Types of Diffusion Contagious – spreads adjacently Hierarchical – spreads to most linked people or places first. Stimulus – idea promotes a local experiment or change in the way people do things. Next slide has graph pictures

Diffusion Relocation Expansion Hierarchical Contagious Stimulus

Hierarchical Diffusion: Innovation, Big City, Most Developed Country, the wealthy…passes to those one ladder down in importance

Contagious Diffusion Contagious: have them guess

Contagious Diffusion Contagious: have them guess

Stimulus Diffusion The idea of fast food travels but the food items did not go with the idea Idea of recording went from tapes, VCR’s….DVR!!