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Across 1. Location within Earth that does not move, has a high temperature, and sends molten rock to Earth's surface (2 words) 4. Means "to bend" 8. Theory proposed by Alfred Wegener that stated Earth's landmasses were once one large continent but have since moved apart (2 words) 9. Point within Earth where rocks move and generate seismic waves 11. Earthquake scale that measures the amount of energy released by an earthquake 13. Transfers energy through a medium as vibrations because particles of the medium touch each other. 15. Outermost layer of Earth 17. The crust and the uppermost (rigid) mantle 18. Transfers energy through a medium due to density differences within the medium. 19. Name given to the region surrounding the Pacific Plate due to the large number of explosive volcanoes (3 words) 20. Liquid layer within Earth (2 words) 23. Seismic wave that travels slowest and only through solids 26. Earthquake scale that measures the amount of damage caused by an earthquake 27. Plate boundary where two plates move away from each other 28. Seismic wave that travels fastest and through any material 29. Thickest layer of Earth 30. Name of Alfred Wegener's supercontinent

Down 2. Theory that states Earth's lithosphere is broken up into pieces that move across Earth's surface (2 words) 3. Where new rock is formed on the ocean floor (2 words) (2 Words) 5. Partially melted (plastic) layer within Earth 6. Picture (printout) produced by a seismograph 7. The ability to do work or cause change. 10. Layer of Earth at Earth's center (2 words) 12. Plate boundary where two plates move toward each other 14. Instrument that detects seismic waves 16. Area of Earth's surface that does not detect any seismic waves (2 words) 21. Transfers energy without needing a medium as the energy is emitted in all directions away from the energy source. 22. Plate boundary where two plates rub horizontally past each other 24. Point on Earth's surface directly above the focus of an earthquake 25. Where old rock is destroyed on the ocean floor 26. The boundary between the crust and the mantle