Across
- 6. the gradual movement of the continents across the earth's surface
- 9. the deepest part of the ocean and the deepest location on Earth
- 11. the rigid outer part of the earth, consisting of the crust and upper mantle
- 12. a layer of partially melted rock upon which the Earth’s tectonic plates ride and move across
- 13. Changes in the land’s features caused by the earth itself, such as the movement of tectonic plates
- 14. A supercontinent comprised of all 7 continents that existed 200 million years ago
Down
- 1. the massive, irregularly shaped slabs of solid rock which float on and travel independently over the mantle
- 2. to decompose as a result of exposure to light, especially that of the sun
- 3. the great size or extent of something
- 4. a large system of rotating ocean currents
- 5. the area around the Pacific Ocean that has many volcanoes and earthquakes
- 7. a circle on the surface of the earth that divides the earth into two equal halves
- 8. a method to rate the strength or total energy of earthquakes
- 10. ½ of a sphere; ½ of the earth