luminescense emission of light by substance by not been heated arrow a shaft sharpened at the front concave outline or surface that curves inward echo series of sounds by the sound waves refraction

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Across
  1. 2. denstructive plate theory
  2. 4. center of interest
  3. 6. phenomenon of light
  4. 9. rock formations
  5. 11. geolical process
  6. 13. outline or surface that curves inward
  7. 16. distance between the center
  8. 17. Earth's innermost part
  9. 20. portable light
  10. 21. greater than wave
  11. 25. the action of process interfering
  12. 26. radiation of electromagnetic
  13. 27. long distance communication wave
  14. 28. light from one celestial body
  15. 29. electromagnetic radiation
  16. 30. liquid layer
  17. 31. action process
  18. 33. greeting or as a signal, sign
  19. 34. can detect one or more sports of shringking
  20. 35. division into two sharply contrasting
  21. 36. series of sounds by the sound waves
  22. 37. arch of colors formed in the sky
  23. 40. a german physicist
  24. 42. the movement of light conceptualized as a wave, defined by such properties as reflection, refraction, and dispersion
  25. 43. emission of light by substance by not been heated
  26. 45. hot molten rocks
  27. 47. explosion of lava
  28. 48. reflective surface
  29. 49. loose sleveless shawl
Down
  1. 1. a long high sea wave
  2. 3. throwing back a body
  3. 5. visible to the human eye
  4. 7. distance between successive crest of a wave
  5. 8. composed of all em waves
  6. 10. luminous envelope of a star
  7. 12. also called dinscrupted theory
  8. 14. natural satellite of the earth
  9. 15. beam of light that spread out
  10. 18. wave with a wavelength
  11. 19. not able to be seen through
  12. 22. third planet from the sun
  13. 23. slide away the rocks
  14. 24. emission of energy
  15. 32. penetrating electromagnetic radiation
  16. 35. it measure humans visual
  17. 38. the highest point
  18. 39. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
  19. 41. hot molten liquid rocks
  20. 44. violent shaking of the ground
  21. 46. a shaft sharpened at the front