How Crime is Detected and Prevented

The first 200 words of this essay...

How Crime is Detected and

Prevented

In this essay I will describe and explain how different methods are

used to detect and prevent crimes. The different types are Alcohol,

Arson, Ballistics, Blood, Documents, Drugs, Explosives, Fibres,

Fingerprints, Footprints, Glass, Hair, Paint, Plastic, Pollen, Soil

and finally Teeth.

ALCOHOL: When a person is suspected of being under the influence of

alcohol, the police can test them with different types of machines.

These machines are called breathalysers. The Lion Alcolmeter S-L12 is

the most common of these. These machines test the breath for traces of

alcohol. If the suspect tests positive, they will be detained until

they are cleared. Other ways of detecting alcohol on a person are

physical tests. The police will ask the suspect to perform certain

actions such as walking in a straight line and following a finger with

there eyes.

ARSON: When the forensic gets to the scene he must be very careful. An

arson attack would burn away most of the evidence so