Delaware River.
Delaware River. (Special to The Denver Post)

1. Which state borders the Delaware River — Ohio or Pennsylvania?

2. In which state would you find more needleleaf forests — Idaho or Kansas?

3. Which state has more people per square mile — Connecticut or North Dakota?

4. Which state has a more humid climate — Nevada or Mississippi?

5. Which state is closer to Lake Erie — Iowa or West Virginia?

6. Which state has a higher percentage of farmland — Nebraska or Connecticut?

7. Which state is closer to the Atlantic Ocean — Alabama or Minnesota?

8. Which state produces more cotton — Texas or Colorado?

9. Which state is closer to Mexico — Nevada or Tennessee?

10. Which state has more square miles of Native American reservations — Arizona or Louisiana?

National Geographic Bee, National Geographic Society

GEOQUIZ ANSWERS: 1. Pennsylvania 2. Idaho 3. Connecticut 4. Mississippi 5. West Virginia 6. Nebraska 7. Alabama 8. Texas 9. Nevada 10. Arizona