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Across 4. Two plates slip past each other 9. A dense ball of solid metal. 11. the idea that the continents are slowly moving over Earth's surface 13. the broken pieces of the lithosphere 20. light colored rock with a coarse texture making up continental crust 21. the place where two plates move towards each other 23. Heat transfer within a material or between materials that are touching. 26. Example of Direct Evidence 28. dark rock with fine texture making up the oceaninc crust 29. the process which continually adds material to the ocean floor. 31. the layer of molten metal that surrounds the inner core 33. "all lands" 34. The transfer of energy through space

Down 1. the flow that transfers heat within a fluid. 2. An undersea mountain chain where new sea floor is produced. 3. a well tested concept that provides a wide range of observations 5. breaks in Earth's crust where rocks slip past each other 6. is a measurement of how much mass there is in a volume of a substance 7. Vibrations that travel through Earth carrying energy released during an earthquake 8. results from a force pressing on an area 10. pieces of Earth's lithosphere are in constant motion driven by convection currents in the mantle 12. deep under water canyons 14. German scientist who hypothesized that all the continents were once joined together. 15. The process by which the ocean floor sinks beneath a deep-ocean trench 16. scientist think that the movements in the liquid outer core create this. 17. the place where two plates move apart 18. The soft layer of the mantle on which the lithosphere floats. 19. Heat transfer by the movement of currents within a fluid. 22. forms where two pieces of continental crust pull apart. 24. a rigid layer made up of the uppermost part of the mantle and the crust 25. device that bounces sound waves off underwater objects and then records the echos of these sound waves 27. The layer of hot, solid material between Earth's crust and core. 30. any trace of an ancient organism that has been preserved in rock 32. the layer of rock that forms Earth's outer skin