Across
- 7. Alfred Wegener's theory that the continents are moving
- 9. Heat transfer in the mantle that drive plate motion due to density differences
- 10. A crust made of granitic rock
- 13. The shaking of the earth that results from two plates sliding past each other
- 14. A supercontinent that existed 250 million years ago where all of Earths continents were one big landmass
- 15. Melted by heat
- 16. Stands for Sound Navigation and Ranging
- 17. A crust made of basaltic rock
- 19. A undersea valley that represents one of the deepest parts of the ocean
- 21. A type of dark, igneous rock that records Earths magnetic polarity at the time it forms
- 25. A chain of volcanoes that forms when two continental plates converge
- 28. Solid and not easy to bend
- 29. Vibrations that travel through Earth carrying the energy released during an earthquake
- 30. A female geologist and oceanographer who mapped the ocean floor with sonar mapping to help dicover the Mid Atlantc Ridge
- 31. A dense sphere of solid iron and nickel at the center of the earth
- 33. A layer of molten iron and nickel that surrounds the inner core of Earth
- 34. The study of Earths magnetic polarity, as recorded in rocks that are high in iron
- 36. When Earths magnetic field flips
- 37. The theory that all of the continents are moving
- 38. Earths layers that are classified by how the rock moves.
- 39. Type of basalt that forms mounds at mid ocean ridges.
Down
- 1. A type of igneous rock that is light colored
- 2. The layer of hot, solid material between Earth's crust and core
- 3. The rigid outer layer of the Earth that is made of the crust and upper mantle.
- 4. Able to change form permanently without cracking
- 5. A plate boundary where two plates move away from each other
- 6. A chain of volcanic island formed when two oceanic plates converge
- 8. A plate boundary where two plates slide past each other in opposite directions.
- 9. Layers that are separated based off of what they are made of
- 11. A layer of Earths interior located bellow the asthenosphere and above the outer core.
- 12. The process by which molten material adds new oceanic crust to the ocean floor
- 18. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent
- 20. A part of Earths crust that floats on the mantle.
- 22. He was the first person to suggest Continental Drift or more commonly known as Plate Tectonics
- 23. A plate boundary where two plates move towards each other
- 24. A iron-rich mineral found in igneous rocks, sediments, and sedimentary rocks.
- 26. The layer of rock the forms Earths outer crust
- 27. Layer in the upper mantle that is hot and semiliquid but is underneath the Lithosphere
- 30. A molten mixture of rock-forming substances, gases, and water from the mantle.
- 32. A crack or split in Earths crust caused by a divergent boundary.
- 35. An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean