1
Q
Tyre impressions
A
determines where the vehicle is heading
2
Q
Footwear
A
- determines if the person is running or walking
- heel first, sole second: person is heading to the right
- sole first, heel second: person is heading to the left
3
Q
Photograph
A
- first step in preserving an impression
- using natural lighting or automatic flash should be taken with an angled light source
4
Q
Making a cast
A
- fairly large impressions can be made using plaster of Paris.
- with smaller impressions, a pad of quick setting plastic can be used.
5
Q
Factors that depend on the choice of materials used for making the cast
A
- where the impression is located
- under what conditions the material will set
- how much detail is required
6
Q
Plaster of Paris is made up of…
A
calcium sulfate monohydrate
