Topic 1B CSI Flashcards

1
Q

what are the 5 ways to classify crime scenes?

A

1.Locationoftheoriginalcriminalactivity
Primary/Secondarycrimescene.

2.Sizeofthecrimescene
Asinglemacroscopic crimesceneiscomposedofmanymicroscopic crimescenes.

3.Otherclassification
(i)Thetypeofcrimecommitted •homicide,robbery,sexualassault,etc

4 (ii)Thecrimescenecondition •organisedordisorganised

5(iii)Thephysicallocationofthecrimescene •indoors,outdoors,vehicle,etc

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2
Q

7 steps to take when approaching a crime scene CTAAAMM

A
  1. Considerpersonalsafety 2.Takecontroluponarrival 3.Attendtoinjuredpersons/victims 4.Appealforeyewitnesses 5.Alertfordiscardedevidence 6.Markanapproachpathandsecurethescene
  2. Makepertinentnotes
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3
Q

3 steps in managing a crime scene CFW

A
  1. Takecontrolofthescene. 2.Obtainfactofthecasefrom1stPoliceOfficer.
  2. Walkthroughthescene.

purpose of walk through: Establishthenatureandscaleofthecrime. Takenoteofthelocationofpotentialevidence. Mentallyoutlinehowthesceneshouldbemanaged(Amethodical approachisrecommended.)

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4
Q

6 steps in processing a crime scene SDDDCF

A
  1. Searching&markingofphysicalevidence
  2. Documentation–photograph&sketchplan 3.Detectionandretrievingoflatentfingerprints 4.Detection,collection&preservationofevidence
  3. Caseconference&re‐construction 6.Finalsearchandreleaseofcrimescene
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5
Q

describe how latent fingerprints are detected and retrieved DVL

A

1)DustingPowder(accordingtobackground contrast)
-MolybdenumDisuphide
-Aluminium
-carbonblack
liftprintontape

2)Visualisation Reagents
-Ninhydrin(applyandheat)
reactswithamino acids
–IodineSpray
–SilverNitrate

3)Laserfluorescence Spectroscopy‐aloneorusinga dye

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