| A | B |
|---|
| scale | a guide that explains the relationship between real distances on earth and distances on a map. |
| ocean | one of earth's four largest bodies of water |
| cardinal direction | one of the four main points of the compass: north,east,west,south |
| latitude | an imaginary line, or parallel,measuring distance north or south of the equator |
| equator | an imaginary line encircling Earth halfway between the North Pole and South Pole |
| longitude | an imaginary line, or meridian, measuring distance east or west of the prime meridian |
| hemisphere | one half of a sphere or globe. |
| prime meridian | the line of longitude labeled 0 degrees longitude that runs from the North Pole to the South Pole |
| relief | the difference in height between land areas |
| landform | a shape on Earth's surface, such as a mountain or hill |
| continent | one of Earth's seven largest bodies of land |
| elevation | the height of an area above sea level |
| river | natural stream or water larger than a creek and emptying into an ocean, lake, or another river |
| plain | nearly level or gently rolling region of land |
| delta | an area at the mouth of a river where rcih soil deposits are left |
| river source | a place where a river begins, usually in the mountains |
| mountain | a landform with high elevation and high relief |
| plateau | a landform with high elevation but flat or level surface |
| sea level | level that the ocean would reach if it were as still as a water in the pond. |
| desert | dry, barren region, naturally incapable of supporting very much plant or animal life. |
