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Physical E vidence. Review Units 2 and 3. Physical Evidence Review. What does the 1 st officer at the scene need to do after obtaining medical assistance?. Secure the Scene. Physical Evidence Review. What is the definition of a crime scene?.

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physical e vidence

Physical Evidence

Review Units 2 and 3

what is the definition of a crime scene

Physical Evidence Review

What is the definition of a crime scene?

The location where a crime has / might have occurred

what must be included in a rough sketch

Physical Evidence Review

What must be included in a rough sketch

Date, location, and time of incident

Location of all recovered evidence

Location of walls, doors, and windows

Indication of compass direction

what must be included in the notes taken at the crime scene

Physical Evidence Review

What must be included in the notes taken at the crime scene?

The individual who packaged and marked items of evidence

Location of physical evidence recovered

Disposition of items after collection

Date of the investigation

what is the chain of custody

Physical Evidence Review

What is the chain of custody?

The list of every person who has processed evidence

who is responsible for the chain of custody

Physical Evidence Review

Who is responsible for the chain of custody?

Crime scene processor

Evidence clerk

All forensic technicians

what is the definition of physical evidence

Physical Evidence Review

What is the definition of physical evidence?

Evidence that can be collected

Evidence that can establish a crime has been committed

Evidence that links a crime to a victim and perpetrator

what type of containers are used when packaging evidence

Physical Evidence Review

What type of containers are used when packaging evidence?

Paper bags

Unbreakable containers

Forceps

Manila envelopes

what is a buccal swab

Physical Evidence Review

What is a buccal swab?

Swab of the inside of a cheek to sample DNA

what is the purpose of a standard reference sample control

Physical Evidence Review

What is the purpose of a standard reference sample (control)?

To compare with evidence at the crime scene

what is a control substrate area

Physical Evidence Review

What is a control substrate area?

The uncontaminated surface material close to where physical evidence is deposited

what does crime scene reconstruction attempt to do

Physical Evidence Review

What does crime scene reconstruction attempt to do?

Piece together stories by witnesses and suspects

Includes input from the medical examiner and the results from the laboratory

what is needed to get a search warrant from a judge

Physical Evidence Review

What is needed to get a search warrant from a judge?

The name, location, and things to be seized and probable cause

what are the exceptions to the need for a search warrant

Physical Evidence Review

What are the exceptions to the need for a search warrant?

Emergency

Evidence may be lost

Permission given

Imminent arrest

what were the two cases that tested the fourth amendment regarding search warrants

Physical Evidence Review

What were the two cases that tested the fourth amendment regarding search warrants?

Mincey v Arizona – homicide

Michigan v Tyler - arson

slide31

Physical Evidence Review

What is individual evidence?

List TWO examples

Evidence that can be pinpointed to a specific source

Ex: Fingerprints, DNA, bullet markings

slide32

Physical Evidence Review

This type of physical evidence can be either natural or synthetic

Fibers

slide33

Physical Evidence Review

These are prints that are accidental or chance prints that are NOT visible to the eye

Latent

slide34

Physical Evidence Review

Gas, grease, and oil are often used in _____________ cases.

slide35

Physical Evidence Review

What is class evidence?

List TWO examples.

Evidence that can only be associated with a group and not a single

Ex: Fibers, Hairs, Blood Type

slide36

Physical Evidence Review

What can be found embedded in shoes, as well as prove whether a body has been moved, and link a person to a certain location?

Soil and Minerals

slide37

Physical Evidence Review

Indentations left behind by a particular object such as tool marks, bite marks, and shoe prints is called…

Impressions

slide38

Physical Evidence Review

Powder from a firearm that can be found on the shooter’s hand.

Gunshot Residues

slide39

Physical Evidence Review

A shoe print made by a brand new pair of sneakers is an example of …

Class evidence

slide40

Physical Evidence Review

Crime scene reconstruction requires the efforts of these THREE people

Police

Medical Examiners

Criminalist

slide41

Physical Evidence Review

True/False

Street drugs are the only illegal drugs that a person can have

False –

Prescription Drugs that don’t have your name on them are illegal

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