| A | B |
|---|
| contiguous | joined together or connected inside a boundary |
| Mississippi | longest river inside the U.S. |
| coral reefs | submerged or low low-lying structures formed from the skeletons of small sea creatures |
| Rocky Mountains | largest mountain system located within the US |
| Atlantic Ocean | forms the eastern boundary of the US |
| Pacific Ocean | forms the west coast boundary of the US |
| Alaska and Hawaii | two states located outside the "Continental US" |
| Continental Divide | a ridge that runs along the Rocky Mountains and separates water flowing west toward the Pacific and east toward the Mississippi River |
| Great Lakes | large glacier formed lakes between US and Canada |
| urban | densely populated areas...city areas |
| rural | sparsely populated areas...outside of the suburbs |
| megalopolis | super city...urban-like areas extending from Washington D.C. to Boston |
| dry climate | This climate type can be found in the area between the Rocky Mountains and the Pacific Mountain Ranges |
| Central Lowland | The eastern part of the Interior Plains, south of the Great Lakes is the |
| Sierra Nevada and Cascade | thw two Pacific mountain ranges formed by plate movements |
| Mount Mckinley | North America's Highest Mountain (found in Alaska) |
| Atlantic Coastal Plain | Ethe eastern lowlands of the United States are known as the |
| Gulf Coastal Plain | The lowlands in the southeast border the Gulf of Mexico and are called the ... |
| The Appalachian Mountains | This mountain range runs along the western edge of the Atlantic Coastal Plain. |
| Great Plains | The western part of the Interior Plains |
| Marine West Coast | Climate along the Pacific coast from northern California up to Washington |
| Mediterranean | Southern California has this climate. |
| Florida | only state of the contiguous United States with a tropical climate |
| Fourth | How does the United States rank in size among all the countries of the world? |
| Alaska | this is only state to experience a tundra climate |
