Paint and Glass

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Across
  1. 2. A hard, transparent, amorphous, brittle solid made by heating a mixture of silica and other materials
  2. 3. Speed of something in a given direction
  3. 6. Without defined shape
  4. 7. layer of automotive paint that hides imperfections
  5. 11. In original place
  6. 12. holds paint together
  7. 13. type of safety glass composed of two layers of glass
  8. 15. most basic form of glass, most commonly found in jars, windows, and lamps, made with silica and sodium oxides
  9. 16. Heat- or chemically treated safety glass
  10. 18. has more than one refractive index
Down
  1. 1. only has one refractive index
  2. 4. Light travels fastest in this medium
  3. 5. the bending of a wave as it passes at an angle from one medium to another
  4. 8. the most important instrument for locating and comparing paint specimens
  5. 9. the layer of automotive paint that contains the coloration
  6. 10. circular breaks that form of the point of impact
  7. 13. glass containing lead oxide
  8. 14. the ratio of the mass of an object to its volume
  9. 17. fractures that form a straight line moving out from the point of impact