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WorksheetsImpressions, Casts, & Molds
Total questions: 23
Worksheet time: 13mins
The #1 priority of impressions is to preserve it by first
cleaning the area
taking photographs
waxing the impression
clearing out the people
Shoe or tire marks left in soft material can be preserved with
oil
concrete
plaster
gelatin
Wear marks, cuts, gouges and damage to shoes can make the shoe
guilty of the crime
class evicence
individual evidence
useless evidence
When there is a bite mark on the skin what should be done first and quickly?
go to the hospital
wrap it with a gauze
take photos
make molds
True or False: Impressions can be both class and individual evidence?
True
False
The design on the surface of a tire is known as _____________
Ridge pattern
Tread pattern
Tire grooves
Tire impressions
The product of direct physical contact between a 3D object to another material
Impression
Cast
Mold
A cavity produced to make an outline of a dental bite, footwear sole, or tire tread
Impression
Cast
Mold
The result of filling a 3D impression with a hardening material
Impression
Cast
Mold
Tire track impression evidence is considered
Individual evidence
Class evidence
Tool marks left a crime scene
can be impressions or scratches
cannot be casted
Bite mark impressions can also contain
class evidence
tool mark impressions
dental records
DNA
The first step in collecting evidence of a footprint should be
pouring royal rock over the print
setting up a form around the print
photographing the print
spraying the material with hairspray
What material is used to make a mold of a 3D object?
Royal Rock
Dental Stone
Dental Alginate
What material is used to make a cast of an impression?
Royal Rock
Electrostatic lift tape
Dental Alginate
