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Across 1. A divergent boundary that occurs on land 4. An underwater mountain chain where new sea floor is produced 6. dark rock with fine texture 7. The soft layer of the mantle on which the lithosphere floats 8. a well tested concept that explains a wide range of observations 10. device that bounces sound waves off underwater objects then records the echoes of these sound waves 12. Where two plates move apart or diverge 14. Heat transfer by the movement of currents within a fluid 15. The place where two plates come together 17. The dense ball of solid of metal 18. states that the pieces of Earth's lithosphere are in slow, constant motion, driven by convection currents 20. located between the outer core and the crust 21. light colored rock with a coarse texture 23. Heat transfer within a material or between materials 26. means all lands 27. The transfer of energy 28. Results from a force pressing on an area 29. The process by which ocean floor sinks beneath a deep-ocean trench and back into the mantle

Down 2. is a place where two plates slip past each other moving in opposite directions. 3. Examples: Rock Samples 5. German Scientist who hypothesized that all the continents were once joined together. 9. Wegener's idea that the continents slowly moved over Earth's surface 11. the layer of molten metal that surrounds the the inner core 12. deep under-water canyon 13. Examples: Seismic Wave 15. Earth's outer layer 16. Produced by Earthquakes 19. Thue upper most part of the mantle and the crust 22. pieces of the lithosphere 24. any trace of an ancient organism that has been preserved in rock 25. breaks in Earth's crust where rocks slip past each other