Criminal investigation

Put the procedure for processing a crime scene in order.

1) allow wet evidence to dry 2)crease a clean sheet of paper in nine equal portions in a three by three sequence 3)place evidence in the center of the sheet 4)fold left side over 5)fold right top and finally bottom side around the evidence 6)tape bindle closed 7)place in plastic or paper evidence bag 8)seal with tamper evidence tape

how to remove skeletal remains from the ground

1) remove soil in shallow layers 2) remove excess soil from skull 3) remove excess soil from remainder of bones 4) photograph and document the skeleton 5) lift skull from ground 6) lift vertebrae carefully supporting each bone 7) lift remaining bones from the dirt

steps for lifting prints

1) sweep finger print dust over the surface of the object 2) Identify usable prints 3) Photograph usable prints 4) Use clean piece of tape to pick up the powder 5) Attach tape to a clean piece of white paper

Put the procedure for processing a crime scene in order.

1)secure the scene 2)document the scene 3)search the scene 4)collect the evidence 5)submit the evidence

How many individual hairs should investigators collect for samples?

50 to 100

In cases of sexual assault, who should collect swabs for sexual evidence on a victim?

A physician

what are rights guaranteed by the Constitution?

All evidence in court must be legally obtained, An individual must have knowledge of all charges brought against him or her, No unreasonable searches and seizures

Which of the following is true about collecting latent prints on the scene of a crime?

All objects containing fingerprints should be packaged and submitted if possible

Which of the following is something which can be identified based on anthropological evidence?

Approximate age of victim, DNA identification, Presence of skeletal trauma

How much blood should be collected for toxicological analysis?

At least 10 mL

What best describes the science of projectiles and fire arms?

Ballistics

Blood samples from a scene

Brown paper bag or box

Which of the following best describes a swab from the inside of an individual's mouth used to compare DNA found on a crime scene?

Buccal swab

examples of ballistic evidence?

Bullets, Cartridge cases, Ammunition

What is the best method for crime scene investigators to use to avoid spreading trace amounts of DNA throughout the crime scene?

By using new gloves after handling each item

Finding a gun registered to a suspect at the scene of a crime is an example of which type of evidence?

Circumstantial evidence

Which of the following is the preferred method for collecting dried blood found on a crime scene?

Collecting the entire object containing the presence of dried blood

Fiber is best used to prove which of the following?

Contact between two individuals or an individual and an object

Cocaine, fentanyl, anabolic steroids and peyote are all examples of which of the following?

Controlled substances

Which of the following is NOT an essential type of biological evidence?

Dental remains

What is the primary objective of finding physical evidence?

Determining what actually occurred on the crime scene

Which of the following is personal protective equipment NOT required for collecting narcotic evidence?

Earplugs

What is something analysis on a fire arm would be able to identify?

Ejection pattern, Accidental discharge, Presence of silencer

After usage, all personal protective equipment should be disposed of in the nearest trash can

False

Personal protective equipment should only be used by medical personnel.

False

Which of the following professionals would be responsible for excavating dental remains on a crime scene?

Forensic Odontologist

Large area where a through search is needed

Grid method

Which of the following is true about collecting hypodermic syringes?

Hypodermic syringes should be stored in biohazard safety tubes

Which of the following best describes finger, hand and foot prints left on the surface of objects after contact?

Latent prints

Which of the following best describes vitreous fluid?

Liquid which lubricates the cartilage in the eye

What is something investigators would be able to identify from analysis on a fiber found on a crime scene?

Match between two samples, Origin of fiber, Material fiber is made of

What is something analysis of hair collected at the scene of the crime can identify?

Match between two samples, Race of individual, Whether hair was shed naturally or pulled out forcibly

Arson evidence

Metal cans

Which of the following is NOT a piece of personal protective equipment which must be used on a crime scene?

Mouth guard

Which of the following is NOT a piece of information essential for maintaining the chain of custody?

Name of all suspects

Which of the following best describes substances affecting mood and behavior which are used for nonmedical purposes?

Narcotics

When should urine be collected from an individual?

No later than 120 hours after the incident

When should blood be taken for toxicological analysis?

No later than 24 hours after the incident

Which of the following situations would NOT be an example of probable cause for search or seizure?

Officers have a warrant to search one house, but decide to search all of the houses in a neighborhood

Which of the following best describes what latent prints are made of?

Oils and sweat

How should blood pools found on a crime scene be collected?

On a gauze pad and allowed to dry

Small glass particles

Paper bindle

Clear Plastic Bags

Powder

How should investigators collect hair samples from an individual for comparison?

Rub individual's head over paper and pluck hairs from the head

What is NOT a way to ensure evidence has not been tampered with or contaminated?

Searching a scene thoroughly

Which of the following best describes trace evidence?

Small amounts of evidence including hair, fibers, glass and paint

Large area where there is a single point identified from which to start

Spiral search

Which of the following can NOT be collected from a living individual?

Stomach contents

Large area looking for a large object

Strip method

Eye witness accounts are examples of which of the following types of evidence?

Testimonial evidence

Which of the following is true about collecting glass evidence?

The direction of force which broke the glass can be determined from glass samples

Exposure to blood-borne pathogens is a concern for crime scene investigators.

True

Packaging evidence correctly is an essential feature of preventing evidence contamination.

True

What is the first step for collecting firearm evidence?

Unload the gun

Small space with a clear point of origin

Wheel method

When is anthropological evidence particularly useful?

When a decomposed body is unrecognizable

Which of the following is true about collecting individual bullets on a crime scene?

Wrap bullets individually

Indoor crime scene

Zone method

The results of physical evidence analysis could NOT do which of the following?

convict suspect

Law enforcement officers must always obtain a warrant to search private property.

false

Law enforcement officers must apply to an unbiased jury for a warrant.

false

Processing and protecting the crime scene will not have any impact on convicting a criminal.

false

Non-Porous surfaces

glass, plastics, metals, ceramics, glossy paints

what bones have the best opportunity for DNA extraction

humerus, femur, radius, ulna, tibia, and fibula

Leak-proof Container

liquid

Paper Envelopes

plants

what bones have an Accurate Identification of Victim

skull and pelvis

Pill Box Vial

tablets

Allowing family or friends of a victim onto a crime scene can contaminate evidence.

true

Biological samples can expose law enforcement samples to pathogens

true

Soil should not be removed from any holes or crevices in the bone

true

porous surfaces

untreated wood, paper, tissue, cardboard, fabrics