| A | B |
|---|
| Contour lines | Connect points of equal elevation |
| Elevation | The height of an object above sea level |
| Contour interval | The difference in elevation between one contour line and the next. |
| Slope | Rise/Run |
| Steep slope | Contour lines close together |
| Gentle slope | Contour lines far apart |
| Map Scale | Map distance to earth distanc |
| Index contour | Darker contour line that is usually every fifth line and is labeled by elevation. |
| Map | Model of the Earth's surface. |
| Reference point | A fixed place on the Earth's surface used to describe direction and location |
| Cardinal Directions | North, South, East, West |
| True North | the geographic North Pole |
| Magnetic Declination | The angle of correction between geographic north and magnetic north. |
| Equator | Imaginary circle halfway between the poles that divides the Earth into the Northern and Southern Hemispheres. |
| Latitude | The distance north or south from the equator; measured in degrees. |
| Longitude | The distance east or west from the prime meridian; measured in degrees. |
| Prime Meridian | The line of longitude that passes through Greenwich, England; represents 0 degrees longitude |
| Mercator projection | Contents of the globe are transferred onto a cylinder. |
| Conic projection | Contents of the globe are transferred onto a cone. |
| Azimuthal Projection | Contents of the globe are transferred onto a plane. |
| Aerial photograph | A photograph taken from the air. |
| Remote sensing | Gathering information about something without actually being nearby. |
| Topographic map | A map that shows the surface features of the Earth. |
| Relief | The difference in elevation between the highest and lowest points of an area being mapped. |
