Forensic 1 Crime Scene and Investigation/Evidence Collection Quiz

who are the 5 professional people at a crime scene

-police officers -crime scene investigators -medical examiners -detectives -specialists

Bindle

A folded paper used to hold trace evidence

individual evidence

A kind of evidence that identifies a particular person or thing

physical evidence

Evidence like fingerprints

Direct evidence

Evidence that (if true) proves an alleged fact, such as an eyewitness account of a crime.

trace evidence

Fibers, hair and other such microscopic evidence which relates to the commission of a crime. ... These trace materials include human hair, animal hair, textile fibers and fabric, rope, feathers, soil, glass, and building materials.

Dr. Locard

French criminologist, the pioneer in forensic science who became known as the "Sherlock Holmes of France," formulated the basic principle of forensic science: "Every contact leaves a trace".

Search patterns

Grid, Linear, Quadrant or Zone, and Spiral

Class evidence

Material that connects an individual or thing to a certain group.

biological evidence

Samples of biological material—such as hair, tissue, bones, teeth, blood, semen, or other bodily fluids—or to evidence items containing biological material

Seven S's

Secure scene, separate witness, scan scene, see scene, sketch scene, search for evidence.

why is securing a crime scene important

So that the evidence is not tampered with or contaminated

chain of custody

The chronological documentation or paper trail that records the sequence of custody, control, transfer, analysis, and disposition of physical or electronic evidence.

First responder

The first police officer to arrive at a crime scene

principals of exchange

Whenever two objects come into contact with one another, there is exchange of materials between them.

Eyewitness

a person who has personally seen something happen and so can give a first-hand description of it.

specialists duty at crime scene

consulted if evidence requires their expertise

identify the method in which evidence is documented properly

datum points, chain of custody, evidence log

medical examiners duty at crime scene

determine manner of death: natural, accidental, homicide, suicidal , undetermined

crime scene investigator's duty at crime scene

document the crime scene, collect physical evidence, record data, sketch scene, take photos

circumstantial evidence

evidence also called indirect, trace evidence

biological evidence

evidence like blood or hair

detectives duty at crime scene

interview witnesses and talk to crime scene investigators about evidence

Crime scene investigator

known as forensic science technicians, collect and examine evidence present at crime scenes.

police officer's duty at crime scene

secure the scene, direct activity, call in DA to determine whether search warrant is necessary for crime scene investigators

why is the chain of custody important in packaging evidence

so that it is evident that the evidence was not tampered with on its way to court and also so that if it gets messed up they know who did it