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

2. Describing Distributions

3. Describing Distributions
Discuss concentration and density using map

4. 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

6. Diffusion: Relocation is different than Expansion

7. 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

8. Diffusion
Relocation
Expansion
Hierarchical
Contagious
Stimulus

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

10. Contagious Diffusion
Contagious: have them guess

11. Contagious Diffusion
Contagious: have them guess

12. 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!!