| A | B |
| agriculture | business of farming |
| badlands | rugged, barren region in SW South Dakota & NW Nebraska in which erosion has produced unusual land formations |
| dune | mounded hill or ridge of sand heaped by the wind |
| hill | rounded part of the earth's surface with sloping sides |
| lake | inland body of water |
| latitude | distance in degrees north or south of the equator |
| longitude | distance in degrees east or west of the prime meridian |
| plain | area of broad, level land |
| prairie | large plains region with tall grasses |
| source | place where a river begins |
| strait | narrow stretch of water that connects two larger bodies of water |
| Gateway Arch | a 630 ft.tall arch in St. Louis, MO tallest monument in US |
| Mount Rushmore | 60 ft. tall carved faces of 4 presidents in Black Hills |
| Nebraska Sand Hills | low, rolling hills w/grass-covered sand dunes in NE,largest dune area in N.Am. |
| Northwest Angle | undeveloped peninusula surrounded by Lake of Woods at top of MN, reached by land only by passing through Canada |