| A | B |
|---|
| Average Slope (def) | The change in elevation over a given distance. |
| Latitude (def) | Angular distance in degrees north or south of the equator |
| Latitude of the North Pole | 90 degrees N |
| Latitude of the South Pole | 90 degrees S |
| Synonym for Latitude | Parallels |
| Latitude of the Equator | 0 degrees lat. |
| Longitude (def) | Angular distance in degrees east or west of the prime meridian |
| Synonym for Longitude | Meridians |
| Distance in miles from one line of latitude to the next | 70 miles |
| Distance in km from one line of latitude to the next | 112 km |
| How many minutes are in a degree? | 60 minutes |
| How many seconds are in a minute? | 60 seconds |
| Latitude of the Tropic of Cancer | 23.5 degrees N |
| Latitude of the Tropic of Capricorn | 23.5 degrees S |
| Latitude of the Arctic Circle | 66.5 degrees N |
| Latitude of the Antarctic Circle | 66.5 degrees S |
| How does distance between Longitude lines change as you approach the poles? | The lines of Longitude get closer together toward the poles. |
| Longitude of the Prime Meridian | 0 degrees long. |
| Longitude of the International Date Line | 180 degrees long. |
| Place where the Prime Meridian is located. | Greenwich, England |
| Contour Lines (def) | Lines that connect points of equal elevation |
| Elevation (def) | Height above sea level |
| Topographic Map (def) | Map showing the shape & elevation of the Earth's surface. |
| Contour Interval (def) | The difference in height between two adjacent contour lines |
| Index Contours (def) | Every 5th line is darkened & labeled with the elevation |
| Map Legend (def) | Explains what the symbols used on the map mean |
| Best most to scale representation of Earth | Globe |
| Great Circle (def) | A circle whose plane passes through the center of a sphere, dividing it in half. |
| 3 Types of Map Projections | Mercator, Gnomonic, Polyconic |
| Hachures (def) | Lines drawn on a contour line to show a depression |
| Map Scale (def) | The relationship between the distance on the map & the actual distance on the Earth's surface. |
| 3 Types of Map Scale | Numerical, Verbal, Graphical |
| Synonym for Map Legend | Map Key |
| Magnetic Declination (def) | The difference in the angle between true north & magnetic north |
| USGS stand for | United States Geological Survey |
| What does a spot check written in brown mean? | The elevation is an estimate. |
| What does a spot check written in black mean? | The elevation is actual. |
| Formula for average slope | change in elevation divided by the change in distance |
| Ex. of a numerical scale meaning 1 inch =1 mile | 1: 62,500 |
| Polyconic Map projection (def) | Projection of the globe onto a cone: used to make topographic maps; distorts land the least |
| Mercator Map projection (def) | Projects the globe onto a cylinder; poles are cut off; Greenland and other extreme north & south areas are enlarged; shows true direction as straight lines |
| How are contour lines drawn to show a steep slope? | Contour lines are drawn close together. |
| Gnomonic (def) | Projection of the globe onto a flat sheet; shows the shortest route between two points; used to plan long plane flights |
| Geosynchronous | Having an orbit with a fixed period of 24 hours |
| Bench Mark | Location whose exact elevation is known & is noted on a brass or aluminum plate permanently in the ground; abbrev. BM |
| Geosynchronous Satellite Examples | Weather Satellites & Communication Satellites |
| Lat & long of HS South | 39 degrees North 74 degrees West |
