| Term | Definition |
| Appalachian Mountains | a mountain range in the eastern United States extending from Quebec to the Gulf of Mexico |
| Great Lakes | a group of five freshwater lakes of the central North America between the United States and Canada; the lakes are Huron, Ontario, Michigan, Erie and Superior |
| Mississippi River | a major North American river and the chief river of the United States |
| Great Plains | a vast prairie region extending from Alberta and Saskatchewan and Manitoba in Canada south through the west central United States into Texas |
| Gulf of Mexico | an arm of the Atlantic south of the United States and east of Mexico |
| Piedmont | the plateau between the coastal plain and the Appalachian Mountains: parts of Virginia and North and South Carolina and Georgia and Alabama |
| Everglades | a large subtropical swamp in southern Florida that is noted for its wildlife |
| Rocky Mountains | the chief mountain range of western North America |
| Continental Divide | the top of the Rocky Mountains that divides North America's rivers into the ones that flow eastward and the ones that flow westward |
| Mt. McKinley | Highest peak in north america |
| Grand Canyon | the enormous gorge of the Colorado River in northern Arizona |
| continent | one of the seven large landmasses on the earth |