Across 2. abbreviation for a well known location system 4. scientist who studies the physics of the earth 6. science studying the physics of the earth and its movements 7. the layer of a planet between the crust and the core 9. geographic area characterized by volcanos and earthquakes, aligns with Pacific Ocean plate (3 Words) 11. the study of the movement of the continents/masses on the earth's surface (2 Words) 12. a deep trench in the Pacific Ocean floor (2 Words) 13. tectonic plates coming together 14. related to the earth's continents 16. the name of the single large land mass that scientists theorize once existed 17. series of large waves caused by displacement of water from earthquake, eruption, or explosion 19. the edges of the solid surfaces floating on the earth (2 Words) 20. when there is a slip, or movement, between two plates 21. fractures in rock where there has been movement, stress, and friction 22. hot liquid and semi-liquid rock under the earth's surface

Down 1. floating chunks of solid material that make up the surface of the earth (2 Words) 2. a system of satellites, receivers and computers that can calculate latitude and longitude of a specific position (3 Words) 3. a solid mass floating on the earth's surface 5. one of the gases released in a volcanic eruption (2 Words) 8. a mountain with a vent or opening that releases magma, steam and rock through eruptions 10. sudden, violent shaking of the ground 15. number that tells the relative size of an earthquake 18. the outermost layer of a planet