Across
- 3. number of people
- 8. river between Nebraska and Iowa
- 10. most populated city in Nebraska
- 11. a smaller river which flows into a larger one
- 13. ocean to the west of California
- 14. lines on a map that run north to south
- 16. there are seven of these in the world
- 17. continent we live in
- 19. large pieces of ice
- 20. an area of many, many trees
Down
- 1. Nebraska is in this region of the USA
- 2. largest city in Massachusetts
- 4. lines on a map that run east to west
- 5. capital city of state of Washington
- 6. land surrounded by water on three sides
- 7. most populated city in the USA
- 9. capital city of Minnesota
- 12. mountain range in Colorado
- 15. opening in earth in which lava flows out
- 18. natural resource used in cars