Which river is the longest in the United States?
Which US state has the most volcanoes?
The Great Lakes are located between the US and which country?
Which US state is the largest by area?
Which US state is known as the 'Land of 10,000 Lakes'?
The Rocky Mountains stretch across which US states?
Which US desert is the hottest in the country?
The Mississippi River flows into which body of water?
The Appalachian Mountains are primarily located in which part of the US?
Crater Lake, the deepest lake in the US, is in which state?
