| A | B |
| landform | a physical feature, such as a plain, mountain, hill, vally or plateau, on the Earth's surface |
| mountain range | a group of connected mountains |
| piedmont | an area at or near the foot of a mountain |
| sea level | the level of the surface of the ocean |
| plateau | a broad area of high, mostly flat land |
| basin | low, bowl-shaped land with higher ground around it |
| volcano | an opening in Earth, often on a hill or mountain, through which hot lava, gases, ash and rocks may pour out |
| elevation | the height of land in relation to sea level |
| contour line | a line on a drawing or map that connects all points of equal elevation |
| current | the part of a body of water flowing in a certain direction |
| hills, valleys, plains | examples of landforms |
| 2 largest mountain ranges | Appalachian Mountains and Rocky Mountains |
| Appalachian Mountains | mountains that extend from Alabama to Canada |
| Rocky Mountains | mountains that extend from Mexico through Canada and Alaska |
| Interior Plain | stretches across most of the center of the US |
| Coastal Plain | stretches from the Atlantic Ocean in Massachusetts to Florida and then to Texas |
| 2 largest landform regions in the US | Coastal Plain & Interior Plain |
| tide | the regular rise and fall of the ocean and the bodies of water conntected to it |
| inlet | an area of water extending into the land from a larger body of water |
| sound | a long inlet, often parallel to the coast |
| tributary | a stream or river that flows into a larger stream or river |
| drainage basin | land drained by a river system |
| fall line | a placxe where the elevation of the land drops sharply, causing rivers to form waterfalls or rapids |