Crossword Puzzle

2. A massive area of solid rock made up of Earth's
8. A string of volcanoes and sites of seismic activity, or earthquakes, around the Pacific Ocean
10. A scientific theory that explains how major land forms are created as a result of Earth's subterranean movements
11. A continuous range of underwater mountains that rise up
12. A large plume of hot mantle material rising from deep within the earth
15. Chains of islands formed by volcanoes located along the subduction zone
17. A fracture in Earth's crust that have slid past each other
19. It occurs when two tectonic plates move away from each other
20. Extremely hot liquid and semi-liquid rock under Earth's surface

1. It occurs when tectonic plates move away from each other
3. It occurs where two tectonic plates slide past each other
4. Where all continents moved over Earth's surface spreading apart
5. Long narrow depressions on the sea floor
6. It occurs where too tectonic plates move torwards each other
7. A lowland region that forms where Earth's tectonic plates move apart, or rift
9. The remains of a prehistoric organism preserved in rock over time
13. A super continent where all the continents on earth were once connected like a puzzle piece
14. An opening in the Earth's crust, which lava, ash, and gas erupt
16. It occurs when one tectonic plate moves underneath another one
18. Molten rock ejected by volcanoes in the form of a liquid