1. Last page of mapping notes

2. MAP LEGENDS
A map legend explains what the symbols on a map represent

3. MAP SCALE
The ratio between distances on a map and actual distances on the surface of Earth

4. Fractional Scale: Expresses distance as a ratio
Verbal Scale: Expresses distance as a statement
Graphic Scale: A line that represents a certain distance

5. Process of collecting data about Earth from far above the Earth’s surface
Satellites detect different wavelengths of energy reflected or emitted from Earth’s surface
Energy has both magnetic and electric properties
REMOTE SENSING

6. ELECTROMAGNETIC SPECTRUM
The range of electromagnetic radiation waves

7. Plants reflections IR range

8. Types of Remote Sensing
Landsat: Receives reflected wavelengths of energy emitted by Earth’s surface
Used to identify features on Earth’s surface and to study the movements of Earth’s plates, rivers, earthquakes and pollution

9. Types of Remote Sensing
Topex/Poseidon Satellite: Use radar to map features on the ocean floor

10. Types of Remote Sensing
GPS (Global Positioning System): Radio-navigation system of at least 24 satellites that allow users to determine their exact position on Earth.
Calculates your latitude/longitude/speed/etc.

11. Types of Remote Sensing
Sea Beam: Used to map the ocean floor
Located on an ocean ship
Uses sonar (sound waves)