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CSI Flashcards

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Biology 101 flashcards
1
Q

What are the four types of finger prints?

A

loop, whorl, arch, composite

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2
Q

What are four ways to categorize a fingerprint?

A

bifurcation, lake, ridge ending, island

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3
Q

What is bifurcation on a fingerprint?

A

one ridge splits to form two ridges and then rejoin to one ridge again, forming a shape like a lake

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4
Q

What is a lake on a fingerprint?

A

a ridge in the shape of a circle or oval

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5
Q

What is a ridge ending?

A

a ridge ends

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6
Q

What is an island on a fingerprint?

A

a very short ridge in the print pattern, is not connected to any other ridge, much like an island floating by itself.

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7
Q

What are three ways to recognize that a human being was recently in a room?

A

fingerprints, footprints, items moved, electronics left on, lights left on, windows or blinds open

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8
Q

What are three ways to recognize evidence of animal activity in an outdoor setting?

A

scat, trampled plants, remains of a meal, tracks

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9
Q

What properties would you use to compare a soil sample

A

colour, texture, odour, content, particle size, particle shape, pH

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10
Q

What do good detectives do?

A

pay attention to their surroundings, ask logical questions, contact people like forensic dentists and artists

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11
Q

What skills do good detectives have?

A

observant, ready, reassuring but sterm and commanding

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12
Q

What is an inference?

A

a statement or judgement made based on an observation, but cannot be directly observed itself (I think…because…)

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13
Q

What is a pattern?

A

a ring of suspicious events or clues related to each other or something

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14
Q

What does investigate mean?

A

is to look over a crime or case and try to find out information to solve it.

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15
Q

What is evidence?

A

clues in an investigation used to find a suspect or close a case

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16
Q

What is an observation

A

interpreting or describing with the five senses

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17
Q

What are the 5 senses?

A

touch, sight, smell, taste, sound (hear)

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18
Q

What is classifying?

A

to put objects into groups based on directly observable properties

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19
Q

What is quantifying?

A

describing or comparing objects using measurements or numbers

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20
Q

What are methods of quantifying?

A

time, length, volume, mass, speed

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21
Q

What is questioning

A

asking thoughtful questions to gather necessary and accurate information

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22
Q

Communicating

A

describing objects, events of finding (research) so other can understand your results

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23
Q

What properties are used to identify animal tracks?

A

direction of travel, length and width, straddle, stride

24
Q

direction of travel

A

shows where the animal was going and where it has been

25
Q

length and width

A

gives us an idea of the size of the animal

26
Q

straddle

A

the distance inside the print, tells us how far apart the legs are

27
Q

stride

A

tells us whether the animal was walking or running - the further apart the strides the faster the animal moving

28
Q

How can you estimate the weight of an animal?

A

compare the depth of a track to your own

29
Q

Which animal would have about the same depth of print as you?

A

a wolf that weighs about 45kilograms (100 pounds)

30
Q

Which animal would have a shallower print than you?

A

coyotes (18 Kilograms/40 pounds)

31
Q

Which animal would have a deeper print than you?

A

black bear (100 kilograms - 200)

32
Q

bounder

A

leap into the air and land with four feet eg. weasel

33
Q

pacers

A

one front paw and one back paw beside each other eg. bears

34
Q

diagonal walkers

A

cats, dogs

35
Q

two toed (cloven-hoof)

A

deer, elk, moose, bison, mountain goats, wild sheep

36
Q

four toed animals

A

cats (cougar lynx), dogs (wolf, coyote, fox), rabbits

37
Q

five toed animals

A

weasels (badgers, wolverines, mink) bears, otters,skunks, beavers

38
Q

four in front, five in back

A

mice, squirrels, pika, porcupine, ground squirrels.

39
Q

foot print size =

A

15% of total height

40
Q

formula foot - height

A

footprint/height = 15/100 cross multiply and divide

41
Q

graphology

A

study of penmanship

42
Q

fabric forensics tests

A

wrinkling, stretch, absorbency, colour, colourfastness, flammability

43
Q

testing tracks

A

location, tread width, number of grooves, width of grooves, tread pattern, worn areas, texture

44
Q

jumping

A

feet are close together, landing on two and two or all four, distance between track is great

45
Q

alternating tracks, no bunching of tracks, close distance between

A

walking

46
Q

tracks still alternating, distance between tracks spreading out

A

casual gait

47
Q

distinct feet, large distance between tracks

A

running

48
Q

tracks begin to bunch together, distance increases

A

easy loping

49
Q

steady gait, distance increases

A

loping

50
Q

common indicators in comparing handwriting samples

A

spacing and slant of letters, spacing of words, pressure on the page, formation of loops, dotting of letters, crossing of t, how letters are joined, combination of printing and writing, size of words and letters, formation of x,q, extraneous marks on page or ornaments, writing tool used

51
Q

fabric/cloth/textile

A

formed from thread together (weave, knit, knot)

52
Q

thread

A

can be pulled out of a piece of fabric

53
Q

fibre (fiber)

A

need a microscope

54
Q

types of fabric

A

synthetic, natural

55
Q

synthetic fabric

A

polyester, acrylic, nylon, spandex

56
Q

natural fabric

A

wool, silk,cotton

Science (4 decks)

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