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Intro to Forensic Science > Quiz 2 > Flashcards

Quiz 2 Flashcards

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Biology 101 flashcards
1
Q

taphonomy

A

natural changes that occur to a body over time(sun bleaching

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2
Q

Vegetational Indicators

A
  • Normal plant growth
  • Increased plant growth(decomposing body)
  • Stunted plant growth impeded roots)
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3
Q

Clandestine Graves

A
  • Average depth is 2ft
  • Rushed
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4
Q

Ornamental Plantings

A

Intentional planting; associated with graves

  • yucca, roses,lilies,ferns,etc
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5
Q

Yucca

A

body keeps flower alive(common with African American) can’t grow by itself

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6
Q

Mustard Grass

A

No need for search in area

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7
Q

Age

A

Stick and branches

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8
Q

Soil components

A

sand, silt,and clay

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9
Q

Horizons of soil

A

A: organic material
B: orange, subsoil
C: Clays
D: Gravels
E: bedrock

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10
Q

Bedrock

A

*If exposed bedrock no need to dig

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11
Q

Stratigraphy

A

Layer cake of dirt; all layers of soil

*Deep stratigraphy in flooded areas

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12
Q

mottling

A

mixing of soils
- never goes back the same; takes million of years to form again
- Check for body

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13
Q

Probing

A

tells that soil under ground is being disturbed by something

  • used for soil density
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14
Q

Hollow Stem Augering

A

Looking for mixing of soils(mottling) Looks similar to probe(instead of point it has “soon; open window)(

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15
Q

William Bill Longely

A

Bank robber, Hanged for his crimes, but his body wasn’t buried; it was the town drunk; he didn’t actually die and pretended to be dead and ran off; was killed another way

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16
Q

Shoes

A

Don’t decompose

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17
Q

Reverse Photogrammetry

A

Predict where a grave is by measuring distance of other graves

18
Q

Monitoring

A

Using a large piece of equipment for excavation

19
Q

Scent Detectors

A

Ex: Casey Anthony;

Smell:Methane(usually associated w/ decomposition)

A handheld odor-detecting device can provide quality data for many forensic applications (not really valid)

20
Q

Lipids/Geovhemical Studies

A
  • Check soil for fats, blood proteins leach into the soil during decomposition
  • Particularly useful if bodies have been removed from the grave
21
Q

Human Remains Detective Dogs(HRDD)

A
  • trained to find things associated w/ human decomposition/remains
  • Not trained to find living people
  • No cross training(too many scents)
  • Can pick up scents as far as Philly
22
Q

Utility Dog

A

Aggressive police dog, usally cross trained in either(drugs, money, bombs, and gun)

23
Q

Cameras and Scopes

A

Thermography
Photography
Lidar
Side Scan Sonar
Ground Penetrative Radar(GPR)

24
Q

Thermography:

A

Means of detecting heat
- Must have some light(no need for existing light)

  • Useful during sunrise and sunset
  • Infared
  • Can’t detect through water or glass
25
Q

Photography

A

Ultraviolet(UV)

  • Enhance injuries(ex contusions on dark complexions)
  • ## Cause bone to flauresh(dinstinguish bone)
26
Q

Lidar

A

Light detection and ranging(LIDAR)

airborne data capture systems can be used to very rapidly collect laser scans; 3D

27
Q

Side scan Sonar

A

Emits conical or fan shaped pulses down toward the seafloor across a wide angle perpendicular to the path of the sensor through the water, which may be towed from a service vessel like a boat

28
Q

Friction Ridges

A

on fingertips and palms, soles,and toes

  • only fingerprints are in searchable data bases
29
Q

epidermis

A

top layer and sheds

30
Q
  • Dermis:
A

blood vessels,sweat glands,nerves,(none of this is in epidermis)(

ex: paper cut is dermis being penetrated)

31
Q
  • Dermal papillae:
A

undulating surface on top of dermis under epidermis that lock. together; (creating friction ridges on fingers: for grip) unique to everyone Palms and soles of feet

32
Q

Questioned

A

Don’t know whose it is(usally compared to those in a system already

33
Q

Finger tip patterns

A

Loops( 2 types; most common)
Whorls(8 types)
Arch(r types; rare)

34
Q

Known Fingerprints

A

recognizable finger prints

35
Q

Anatomy of fingerprints

A

*Class characteristics
Core
Delta
Type lines

36
Q

Core

A

Central most portion of fingerprint pattern

37
Q

Delta:

A

divergence of the type lines(or bondary of type lines and fingerprint pattern)

38
Q

Type Lines

A

surround fingerprint pattern

39
Q

minutiae

A

individual characteristics of finger prings(ex: the way it splitis

40
Q

Latent fingerprint

A
  • fingerprint invisible to naked eye
  • Carbon black powder
41
Q
A

Intro to Forensic Science (4 decks)

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