| A | B |
|---|
| topography | The shape of land determined by elevation, relief and landforms |
| elevation | Height at sea level |
| relief | The difference in elevation between the highest and lowest parts of an area |
| landform | A feature of topography formed by the processes that shape Earth's surface |
| landform region | A large area of land where the topography is similar |
| plain | A landform made up of flat or gently rolling land with low relief |
| mountain | A landform with high elevation and high relief |
| mountain range | A series of mountains that have the same general shape and structure |
| plateau | A landform that has a more or less level surface and is elevated high above sea level |
| lithoshere | A rigid layer made up of the uppermost part of the mantle and the crust. One of four spheres into which scientists divide Earth |
| core | Earth's dense center, made up of the solid innner core and the molten outer core |
| mantle | The layer of hot, solid material between Earth's crust and core |
| crust | The layer of rock that forms Earth's outer surface |
| rock | The material that forms Earth's hard surface |
| geology | The study of the solid Earth |
| map | A model of all or part of Earth's surface as seen from above |
| globe | A sphere that represents Earth's surface |
| scale | Used to compare distance on a map or globe to distance on Earth's surface |
| symbols | On a map, pictures used by mapmakers to stand for features on Earth's surface |
| key | A list of the symbols used on a amp |
| equator | An imaginary line halfway between the North and South poles that circles Earth |
| hemisphere | One half of the sphere that makes up Earth's surface |
| prime meridian | The line that makes a half circle from the North Pole to the South Pole, passing through Greenwich, England |
| degree | A unit used to measure distances around a circle. One degree equals 1/360 of a full circle |
| latitude | The distance north and south from the equator, measured in degrees |
| longitude | The distance in degrees east and west of the prime meridan |
| map projection | A framework of lines that helps to show land masses on a flat surface |
| satellite image | Pictures of the land surface bases on computer data collected from satellites |
| pixel | The tiny dots in a satellite image |
| digitizing | Converting information to numbers for use by a computer |
| topographic map | A map that shows the surface features of an area |
| contour line | A line on a topographic map that connects points of equal elevation |
| contour interval | The difference in elevation from one contour line to the next |
| Global Positioning System | A method of finding latitude and longitude using satellites |
