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Chapter 1 Section 2
Term | Definition |
---|---|
Scale | Relative size on a map |
Distortion | Loss of accuracy |
Geographic Information System (GIS) | A computer-based system that links information to locations |
Projection | Method of mapping Earth to a flat surface |
Compass Rose | A diagram of showing directions |
Key (Legend) | Explains the symbols and shading on the map |
Positives of globes | Same shape as Earth; accurate sizes, shapes, distances |
Negatives of globes | Cannot show much detail; not convenient |
Positives of Mercator projection | Good for directions; shows correct shapes |
Negatives of Mercator projection | Does not show correct size or distances; areas near poles are too big |
Positives of Equal Area projection | Shows correct size of landmasses |
Negatives of Equal Area projection | Shapes are distorted |
Positives of Robinson projection | Most sizes, shapes, and distances are accurate |
Negatives of Robinson projection | Still some distortions, especially around edges |
Why do all maps have distortion? | Earth is a sphere, maps are flat |