midterm

Question 1

Analyzing a fingerprint describe…..

Answer 1

Patent or visible prints: smooth surface in blood, ink, or some other liquid
Plastic prints: indentations left in some soft material (clay, putty, wax)
Latent prints: hidden prints caused by the transfer of oulr and sweat
Made visible by dusting with powder or developing with chemicals

Question 2

Securing a crime scene:

preliminary

Answer 2

Scene security also needs to happen as soon as possible. This includes arrest, detaining witnesses, removing people from the premises, maintaining crowd and vehicle control and so on
Crime Scene security can be maintained by setting up a perimeter and to keep as many people out as possible
Preliminary: 
- Proceed promptly and safely 
- Render aid and assistance 
- Effect preliminary notification
- Locate witnesses 
- Investigate briefly and secure the scene 
- Maintained control 
- Interview witnesses
- Note all conditions
- Arrest suspects as appropriate 
- Report fully and accurately 
- Yield to continuing investigation

Question 3

Describing different types of glass and factors in the manufacturing that are different for each type

Answer 3

Tempered glass - made stronger by rapid heating and cooling. This make it break into dice (small square) used for windshields

Laminated glass (stronger because it makes one layer of plastic in between two pieces of glass)

Question 4

how is glass made

Answer 4

Sand is mixed with metal oxides/ soda (sodium carbonate) / lime (calcium oxide)
The different types of glass are manufactured based on the type of metal oxide