1. Parts of a Map
Title
Date
Legend
Orientation
Scale

3. Map Scale
Expressed as a ratio of unit on map to actual number of units on Earth.
1:100,000 inches =
1 inch on map is the equivalent of
100,000 inches in the real world
The larger the second number, the smaller the map scale

4. THUS…
A large-scale map displays a relatively small section of the Earth’s surface
A small-scale map displays a relatively large section of the Earth’s surface

6. Remote Sensing
Measuring and interpreting the Earth’s surface from far away
Balloon
Aircraft
Satellite

7. Remote Sensing
Satellite imaging often produces “false color” images

8. False Color (example)

9. Orthophoto Map
Map drawn on actual aerial/satellite photo

10. Geographic Information System (GIS)

11. GIS Layers

12. GIS Layering
Vectors
Rasters

13. What GIS Can Do