Across
- 2. ____ mountains are where the Rio Grande and the Colorado River begin.
- 5. Appalachians were formed when tectonic plates within the Earth’s crust collided and ___ ___ .
- 10. When one plate’s greater density makes it sink beneath another plate it is called ____ .
- 11. The St. ___ ___ connects the Atlantic Ocean with the Great Lakes by using canals.
- 14. ____ divide determines the direction of river flow in the U.S., flowing either east or west.
- 15. When ___ ___ filled with water, they formed the Great Lakes: Superior, Erie, Ontario, Michigan.
- 17. ____ lies between Atlantic Coastal Plains and Appalachians & is a fertile plateau .
- 19. Pangea was formed when the African plate ____ with the Laurentian plate.
- 21. Colorado Plateaus were formed when ___ ___ seeped up through cracks in the Earth’s crust.
Down
- 1. ____ is where the mighty Mississippi River begins, the Gulf of Mexico is where it ends.
- 3. Grand Canyon was sculpted into existence by the ____ ____ .
- 4. Farallon Plate compresses North America , ____ ____ mountain ranges like the Rockies.
- 6. When the Piedmont drops to the Atlantic Coastal Plain, this is called the ___ ___ .
- 7. Pressure between tectonic plates formed the Appalachians by ____ up rock.
- 8. ___ national park has a volcano beneath its surface, magma from the mantle
- 9. North American landscape emerged hundreds of millions of years ago on the continent ____ .
- 12. ___ exposed the deep granite of Yosemite in the west, in the Range and Basin area.
- 13. ___ ___ allows magma to erupt from the seafloor, forming the Hawaiian Islands.
- 16. Farallon Plate converges with North American plate & its density makes it ___ ___ North America.
- 18. Geography of the planet was created as continents ricocheted around the globe on ____ ____ .
- 20. ___ ___ fault was formed when the Pacific plate converged with the North American plate.