| A | B |
|---|
| Map Legend | Key that explains what the symbols on a map represent |
| Geologic Map | Map that shows the distribution, arrangement, and types of rocks below the soil, and other geologic features |
| Map Scale | Ratio between the distance shown on a map and the actual distances on Earth's surface |
| Conic Projection | Map that is highly accurate for small areas, made by projecting points and lines from a globe onto a cone. |
| Contour Interval | Difference in elevation between two side by side contour lines on a topographic map. |
| Contour Line | Line on a topographic map that connects points of equal elevation |
| Topographic Map | Map that uses contour lines, symbols, and color to show changes in the elevation of Earth;s surface and features such as mountains, bridges and rivers. |
| Mercator Projection | Map with parallel lines of latitude and longitude that shows true direction and the correct shapes of landmasses but distorts areas near the poles. |
| Equator | Imaginary line that exists at 0 latitude and circles Earth midway between the North and South Poles |
| Lontitude | Distance in degrees east or west of the prime meridan |
| Latitude | Distance in degrees north or south of the equator. |
| International Date Line | The 180 meridian, which serves as the transition line for calendar days. |
| Prime Meridian | Imaginary line representing 0 longitude and running between the poles and Greenwich, England |
| GIS - Geographic Information System | A mapping system that uses worldwide databases from remote sensing to create layers of information that can be superimposed upon each other to form a comprehensive map. |
| Geologic Map | A map that shows the distribution, arrangement, and types of rocks below the soil, and other geologic features. |
| Landsat Satellite | Information gathering satellite that uses visible light and infrared radiation to map Earth's surface |
| Gnomonic Projection | Map useful in plotting long distance trips by boat or plane, made by projecting points and lines from a globe onto a piece of paper that touches the globe at a single point. |
| Cartography | The science of mapmaking |
| Remote Sebsubg | Process of gathering data about Earth from instruments far above the planet's surface. |
| GPS - Global Positioning System | Satellite based navigation system that permits a user to pinpoint his or her exact location on Earth. |
