| A | B |
|---|
| landforms | the physical features on the Earth's surface |
| landform region | a region that has similar landforms |
| 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 oceans |
| plateau | a broad area of high, mostly flat land |
| basin | a low, bowl-shaped land with higher ground all around it |
| volcano | an opening in the Earth through which hot lava, gases, ash, and rocks may pour out |
| Death Valley, California | lowest point on the continent of North America |
| Rocky and Appalachian | the two largest mountian ranges in the U.S. |
| Coastal and Interior | the two largest landform regions in the U.S. |
| intermountain | between the mountains |
| Mt. McKinley, Alaska | the highest mountain peak in North America |
| Grand Canyon | one of the natural wonders of the world |
| Huron, Ontario, Michigan, Erie, Superior | the five Great Lakes |
