examm Flashcards

(48 cards)

1
Q

At what age can someone be fingerprinted?

A

14 years or older

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2
Q

Where are fingerprints checked?

A

NCICS

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3
Q

Can physical evidence be present at an arson crime scene?

A

True

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4
Q

Can contaminants be found on latent fingerprints during lab processes?

A

True

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5
Q

What is the exclusionary rule?

A

Evidence obtained illegally cannot be used in court

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6
Q

What should be done first with patent impressions, prints, or trace evidence?

A

They should be photographed first

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7
Q

What is a patent fingerprint?

A

A fingerprint that is visible to the naked eye

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8
Q

What are natural and synthetic fibers?

A

Natural = cotton; Synthetic = manmade

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9
Q

What does the linkage triangle illustrate?

A

Possible transfer of evidence between the suspect, victim, and scene

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10
Q

What is the purpose of a crime scene sketch?

A

Provides factual data for crime scene reconstructions (shows what you saw)

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11
Q

What are examples of physical evidence?

A

Fingerprints, hair, fibers, blood, DNA, etc.

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12
Q

What is physical evidence?

A

Tangible evidence that can be seen, touched, smelled, and collected

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13
Q

What does CODIS stand for?

A

Combined DNA Index System

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14
Q

What is direct evidence?

A

Evidence that proves a fact without inference (e.g., camera footage, DNA)

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15
Q

What are the three steps in securing a crime scene?

A
  • Render aid
  • Make it safe
  • Secure the scene
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16
Q

What does the 4th Amendment protect against?

A

Illegal searches and seizures

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17
Q

Why is the method of obtaining evidence important?

A

Improperly obtained evidence may not be admissible in court

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18
Q

What must be done once the crime scene is secured?

A

A field sketch must be created to document the scene

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19
Q

Who can enter or exit the crime scene?

A

No one unless logged; all movements must be documented

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20
Q

Who starts the chain of command?

A

The first responders

21
Q

Why is protecting evidence at the scene important?

A

To prevent contamination and maintain integrity

22
Q

What is needed if there are multiple crime scenes?

A

A command center

23
Q

What angle should all photographs be taken at?

A

90 degrees from the surface upon which they occur

24
Q

Why is it better to take too many photographs rather than too few?

A

To help reconstruct the events of the crime

25
What must be done if a round passes through a person?
The rounds must be located
26
How should blood-contaminated rounds be stored?
In a metal can
27
What must you do if multiple cartridges are found at a crime scene?
* Place numbered cards next to each one * Label them in sequence * Take a picture * Measure from a reference point
28
How should rounds be picked up at a crime scene?
With non-metallic tweezers to avoid scratching the cartridge
29
What must be done if bullet holes are found in a wall?
* Measure the holes * Measure from a reference point * Sections of the wall may be taken as evidence
30
What are lands and grooves?
Unique imprints in the barrel of a firearm
31
Where can gunpowder residue be found on a shooter?
Hands, clothes, or hair
32
What should be done if a suspect is at the crime scene?
* Cover their hands with paper bags * Remove every article of clothing for evidence
33
How should a firearm found in water be collected?
In the same water it was found in to preserve evidence
34
How do ballistics experts analyze a firearm?
* Fire it in a controlled environment * Match rounds to those found at the crime scene or other crimes
35
How do investigators locate bullets inside a victim?
* X-ray the body * Insert a metal rod during the autopsy to trace the bullet path
36
What must be understood about every firearm?
Every firearm is perceived to be loaded
37
What is the difference between venous blood and arterial blood?
Venous blood is darker and found in the body; arterial blood is bright and found on the outside
38
What should be done with an entire garment with blood stains?
It should be collected
39
What cannot be packaged in plastic?
No pathogens
40
What are the three things that should be avoided when packaging evidence?
* Heat * Humidity * Sunlight
41
What elements make up the fire triangle?
* Heat * O2 * Fuel
42
What materials are considered porous?
* Paper * Cardboard * Compression Shirts * Wood
43
What materials are considered non-porous?
* Metal * Plastic
44
When measuring a body, where do you always measure to?
The center of the body
45
What are the requirements for consent searches?
* Must be completely voluntary * Person needs to be present * Can stop search at any time
46
What are the types of warrants?
* Knock Warrant * No knock warrant
47
What is the difference between arrest and detention?
* Detention: Can be detained for a long time * Arrest: Probable Cause needed
48
What is the Locard Exchange principle?
Two objects collide; there is an exchange of evidence