Forensics Unit 5 Part 1 Notes

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13 Terms

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Primary ingredient
________ is silicon dioxide SiO2 (quartz mineral or sand) and traces of various metal oxides: sodium, calcium, magnesium, and aluminum oxides.
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Cobalt
blue glass
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Plastic sheet
________ sandwiched between two regular pieces of glass.
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sand mixture
What is heated to extremely high temperatures and cooled rapidly before it can recrystalize? Answer with a single words or term.
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SODA
________ (NaCO3): lowers the melting point & viscosity making the glass easier to work with.
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fracture
A(n) ________ can not cross an existing fracture.
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size of the projectile
The ________ can not be accurately measured from the crater.
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Concentric fractures
(________ will be reverse)
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Glass
________ is very stable & not susceptible to environmental degradation.
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Radial fractures
________ happen first; immediately.
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CONCENTRIC FRACTURES
Radial fractures happen first; immediately. circular fractures around the center.
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SHEET GLASS
________: blown glass cylinder cut open, unrolled or flattened by gravity and cooled.
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Chromium
green tinted glass