Questions and Answers
What type of fingerprint pattern is characterized by ridges entering on one side and flowing out the other side with a rise in the center, but no deltas?
What fingerprint pattern has a spike in the center and no deltas?
What is a radial loop?
A loop fingerprint pattern which enters and exits on the left side of the fingerprint; one delta.
What is an ulnar loop?
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What is a double loop whorl?
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What defines a plain whorl?
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What is a central pocket loop whorl?
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What is an accidental whorl?
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What is minutia?
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What does AFIS stand for?
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What is a Henry Number?
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Define a delta fingerprint.
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What are latent prints?
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What are patent prints?
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What are plastic fingerprints?
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What is the scientific name for a fingerprint?
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Which animals have fingerprints?
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What fingerprint pattern has two or more deltas?
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What type of fingerprint pattern has one delta?
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What fingerprint pattern has no deltas?
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What is the most common type of fingerprint pattern?
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The cyanoacrylate (superglue) method of developing fingerprints is used on what types of surfaces?
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The silver nitrate method of developing fingerprints is used on what types of surfaces?
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Ulnar loops open to which side?
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What is a bifurcation in fingerprint terminology?
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Fingerprints left in red paint are called what?
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Study Notes
Fingerprint Patterns
- Plain Arch: Ridges enter on one side, flow to the other with a central wave, no deltas.
- Tented Arch: Similar to plain arch but has a spike in the center; also contains no deltas.
- Radial Loop: A loop pattern that enters and exits on the left side, featuring one delta.
- Ulnar Loop: A loop pattern that enters and exits on the right side, with one delta.
- Double Loop Whorl: Comprises two loops opening in opposite directions; identified by two deltas.
- Plain Whorl: Contains two deltas and a complete ridge circuit, resembling a circular pattern.
- Central Pocket Loop Whorl: Features two deltas with a complete circuit, but no ridge connections within the inner area.
- Accidental Whorl: A mixed pattern with two or more deltas, combining different types without fitting a category.
Fingerprint Characteristics
- Minutia: Small ridge details that develop in fingerprints.
- Delta Fingerprint: A triangular ridge pattern with diverging ridges above and below a triangle.
Fingerprint Types
- Latent Prints: Invisible fingerprints requiring development to become visible.
- Patent Prints: Visible prints transferred by foreign substances like blood or paint.
- Plastic Fingerprints: Indentations left in soft materials, such as clay or wax.
Fingerprint Identification Systems
- AFIS: Automated Fingerprint Identification System facilitates the storage and retrieval of fingerprint data.
- Henry Number: Categorizes fingerprints based on the count of whorls.
General Fingerprint Facts
- Common Patterns: Loops are the most prevalent fingerprint type.
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Deltas in Patterns:
- Two or more deltas signify a whorl.
- One delta indicates a loop.
- No deltas are characteristic of arches.
Fingerprint Development Methods
- Cyanoacrylate Method: Effective for developing fingerprints on non-porous surfaces.
- Silver Nitrate Method: Used to develop prints on porous surfaces.
Miscellaneous
- Ulnar Loops: These open towards the pinky.
- Bifurcation: Refers to a fork-like pattern in a fingerprint.
- Animals with Fingerprints: Notable examples include koalas and chimpanzees.
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Description
Explore various types of fingerprint patterns with these flashcards. Learn the differences between plain arch and tented arch patterns, and improve your understanding of fingerprint identification techniques. Ideal for forensic science students and enthusiasts.
