Across
- 3. Makes up the bulk of the glass (ex. Silicon dioxide, boron trioxide, etc.)
- 6. The lines of fracture that extend outward from the point of impact on a piece of glass - look like spider webs and are produced first.
- 8. The most common glass, which is inexpensive, and easy to melt and shape
- 10. Class characteristic of glass determined by dividing mass by volume
- 11. A measure of how much an object slows light. The denser the medium, the slower the light travels.
- 12. Natural form of glass that is created by volcanoes
- 13. Evidence that encompasses the general composition of glass is a class characteristic
- 15. Two sheets of ordinary glass bonded together with a plastic film
- 17. Curved stress lines along the side of a fractured piece of glass. Used to determine the direction of impact.
Down
- 1. Added to reduce the melting point of silica or sand
- 2. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces
- 4. Circular pattern of cracks that forms around a point of impact - encircle the bullet hole and form second.
- 5. Strengthen the glass and make it resistant to water
- 7. Evidence that only occurs if the suspect and crime scene fragments are fit together exactly, like a puzzle - very uncommon with glass.
- 9. Change formers' melting points
- 14. Known as silica or silicon dioxide (SiO2), is the primary ingredient in glass
- 16. Is added to glass to prevent the glass from becoming soluble in water