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WorksheetsSci-Oly 2022-2023 [CrimeBusters]
Total questions: 130
Worksheet time: 44mins
What kind of fingerprint is this?
Plain Arch
Tented Arch
Ulnar Loop
Radial Loop
What kind of fingerprint is this?
Plain Arch
Tented Arch
Ulnar Loop
Radial Loop
What kind of fingerprint is this?
Plain Arch
Tented Arch
Ulnar Loop
Radial Loop
What kind of whorl is this?
Plain Whorl
Central Pocket Whorl
Double Loop Whorl
Accidental Whorl
What kind of whorl is this?
Plain Whorl
Central Pocket Whorl
Double Loop Whorl
Accidental Whorl
What kind of whorl is this?
Plain Whorl
Central Pocket Whorl
Double Loop Whorl
Accidental Whorl
What kind of whorl is this?
Plain Whorl
Central Pocket Whorl
Double Loop Whorl
Accidental Whorl
What ridge characteristic is this?
(a)
What kind of ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
What ridge characteristic is this?
(a)
Can 2 different people have the same fingerprint?
Yes
No
Can a fingerprint pattern change?
Yes
No
How are fingerprints identified?
Different ridge patterns
Different fingerprint classes
What is dactyloscopy?
The study of fingerprint identification
The study of ridge characteristics
What does AFIS stand for?
Automatic Fingerprint Identification System
Automated Fingerprint Identification System
Automated Footprint Identification System
Latent prints are:
Impressions left by friction ridge skin on a surface
Depressions left by friction ridge skin on a surface
How can fingerprints be collected?
Black powder, clear tape
Fluorescent powder, U.V. Lights
Magnetic powder
Cyanoacrylate fuming method
Ninhydrin chemical
When is fluorescent powder used to identify fingerprints?
Multicolored or dark surfaces
Solid colored or light surfaces
Dusty surfaces
All of the above
When is magnetic powder used to identify fingerprints?
Shiny surfaces
Plastic baggies
Containers
When is the cyanoacrylate fuming method used to identify fingerprints?
Plastic
Wood
Metal
A variety of objects
When is the ninhydrin chemical used to identify fingerprints?
Paper, cardboard
Wood
Cloth
All of the above
Which of these are examples of impression evidence?
Tire tracks
Tool marks
Bite marks
Shoe prints
Fingerprints
Tire tracks can be found on:
Road accident scenes
Escape routes of other crime scenes
The drive-thru of McDonalds
Features of tire tracks to analyze:
Tread pattern
Width and depth of track
Unique characteristics due to wear patterns
Tool marks can be found:
Where a tool has been used
Where there are impressions and/or scratches
Features of tool marks to analyze:
Dimensions of the impression
Ridges or striation patterns
Nicks and chips
Paint chips/metal shards left on a tool
Shoe prints can be found:
Pavement
Dirt
Snow
Anywhere
Features of shoe prints to analyze:
Tread patterns, size, and depth
Wear patterns caused by the way a person walks
Material defects or damage
Other trace materials
Bite marks can be found:
Skin
Other objects (styrofoam cups, gum, foods)
Features of bite marks to analyze
Saliva or blood (bodily fluids)
Type of bite mark
Characteristics of the teeth (dental work, position)
Color of area to determine if the bite was old or recent
Impressions may be found in or on many different types of materials. The quality of the impression depends on the object making the impression and the surface condition.
2d vs 3d impression evidence
2d is a photograph or a fingerprint lifted with tape
2d is a cast of an impression
3d is a photograph or a fingerprint lifted with tape
3d is a cast of an impression
Observations of water (what does it look like?)
(a)
Observations of ammonia (what does it look like?)
(a)
Observations of hydrogen peroxide (what does it look like?)
(a)
Observations of lemon juice (what does it look like?)
(a)
Observations of rubbing alcohol (what does it look like?)
(a)
Observations of vinegar (what does it look like?)
(a)
Observations of bleach (what does it look like?)
(a)
Odors of water:
None
Sharp
Strong
Light
Sweet
Odors of Ammonia
None
Sharp
Strong
Light
Sweet
Odors of hydrogen peroxide
None
Sharp
Strong
Light
Sweet
Odors of lemon juice
None
Sharp
Strong
Light
Sweet
Odors of rubbing alcohol
None
Sharp
Strong
Light
Sweet
Odors of vinegar
None
Sharp
Strong
Light
Sweet
Odors of bleach
None
Sharp
Strong
Light
Sweet
pH of water
(a)
pH of ammonia
(a)
pH of hydrogen peroxide
(a)
pH of lemon juice
(a)
pH of rubbing alcohol
(a)
pH of vinegar
(a)
pH of bleach
(a)
Shape and size of Alka-Seltzer
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of baking soda
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of calcium carbonate
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of cornstarch
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of flour
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of gelatin
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of gypsum
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of salt
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of sand
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of sodium acetate
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of sugar
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of vitamin C
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
Shape and size of yeast
Powder
Crystal
Uniform cubes
Irregular shape/size
Granular
pH of Alka-Seltzer
(a)
pH of baking soda
(a)
pH of calcium carbonate
(a)
pH of cornstarch
(a)
pH of flour
(a)
pH of gelatin
(a)
pH of gypsum
(a)
pH of salt
(a)
pH of sand
(a)
pH of sodium acetate
(a)
pH of sugar
(a)
pH of vitamin C
(a)
pH of yeast
(a)
Solubility of Alka-Seltzer in water
(a)
Solubility of baking soda in water
(a)
Solubility of calcium carbonate in water
(a)
Solubility of cornstarch in water
(a)
Solubility of flour in water
(a)
Solubility of gelatin in water
(a)
Solubility of gypsum in water
(a)
Solubility of salt in water
(a)
Solubility of sand in water
(a)
Solubility of sodium acetate in water
(a)
Solubility of sugar in water
(a)
Solubility of vitamin C in water
(a)
Solubility of yeast in water
(a)
Alka-Seltzer’s reaction to HCI
(a)
Baking soda’s reaction to HCI
(a)
Calcium carbonate’s reaction to HCI
(a)
Cornstarch’s reaction to HCI
(a)
Flour’s reaction to HCI
(a)
Gelatin’s reaction to HCI
(a)
Gypsum’s reaction to HCI
(a)
Salt’s reaction to HCI
(a)
Sand’s reaction to HCI
(a)
Sodium acetate’s reaction to HCI
(a)
Sugar’s reaction to HCI
(a)
Vitamin C’s reaction to HCI
(a)
Yeast’s reaction to HCI
(a)
Alia-Seltzer‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Baking soda‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Calcium carbonate‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Cornstarch‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Flour‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Gelatin‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Gypsum‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Salt‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Sand‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Sodium acetate‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Sugar‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Vitamin C‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
Yeast‘s reaction to i2 (Iodine)
Stains pale yellow
Turns blue
Turns clear
True or false: A lower pH number means that it is more acidic
True
False
What is the highest pH level possible?
(a)
What is the lowest pH level possible?
(a)
