Across
- 3. Large underwater mountain ranges where seafloor spreading occurs.
- 5. The process by which new ocean floor is created where two tectonic plates move apart.
- 8. The specific mid-ocean ridge in the Atlantic Ocean that was explored by Project FAMOUS.
- 9. The theory that continents were once connected and have since moved apart over billions of years.
- 10. Acronym for the French-American Mid-Ocean Undersea Study, a research project in the 1970s.
- 11. Vehicles created by experts that can explore the ocean floor because they can hold their shape under high water pressure.
Down
- 1. The theory, based on continental drift, that explains how Earth's surface changes as its crust moves.
- 2. Huge pieces of Earth's crust that fit tightly together and move on the mantle.
- 4. The outer layer of Earth, made of huge pieces called tectonic plates, that is always changing.
- 6. Hot material that rises from Earth's mantle to the seafloor and cools into new crust during seafloor spreading.
- 7. The semi-fluid layer of rock beneath Earth's crust on which the tectonic plates rest.