13 1. Mercator Projections Has parallel lines of latitude and longitude. Shapes of landmasses are correct, but their areas are distorted.
14 2. Conic ProjectionsA map made by projecting points and lines from a globe onto a cone.Distortion is evident near the top and bottom of the projection
15 3. Gnomonic ProjectionsMap made by projecting points and lines from a globe onto a piece of paper that touches the globe at a single point.Distort direction and distance between landmasses.
16 4. Topographic Maps Maps showing the elevation of hills and valleys. Contour lines: Connects points of equal elevation.Contour Interval: Difference in elevation between two side-by-side contour lines.Index Contours: Contour lines marked by their true elevation
17 Map LegendsExplains or depicts what the symbols mean on a topographic map.Map Scales: Ratio between the distances on a map and actual distances on Earth’s surface.
18 Remote SensingProcess of collecting data about Earth far above Earth’s surface.
19 Electromagnetic Spectrum Satellites detect different wavelengths of energy reflected or emitted from Earth’s surface.Ex: visible light, X rays, ultraviolet waves, infrared waves, radio waves, and microwaves.
20 Electromagnetic Spectrum Frequency: Number of waves that pass a point each second.
21 LANDSAT SATELLITESReceives reflected wavelengths of energy emitted by Earth’s surface.Topex/Poseidon Satellite: Uses radar to map features on the ocean floor.