Fingerprints 0.0 / 5 ? CriminologyForensic StudiesUniversityOther Created by: AshleeCreated on: 01-05-15 19:13 What are the components of fingerprints? Ridge pattern, burification, ridge units, ridge ending, sweat pore, scars, ridge, furrow 1 of 33 What are furrows? Valleys or depressions between friction ridges 2 of 33 What 2 processes would you use to compare fingerprints? Suspect nomination and speculative searching 3 of 33 What is suspect nomination? Comparing fingerprints found at scene to specific person 4 of 33 What is speculative searching? Comparing fingerprints found at scene to entire database for match 5 of 33 How many clarity details are there? 3 6 of 33 What are the first levels of detail for fingerprints? Ridge flow and pattern 7 of 33 What is ridge flow? Path and arrangement of friction ridges 8 of 33 What are patterns in fingerprints? Arrangement of ridges during foetal growth 9 of 33 What are the second levels of detail for fingerprints? Scars, ridge endings, permenent creases and burifications 10 of 33 What are ridge endings? Ridge that comes to a natural stop or finish 11 of 33 What are burifications? When a ridge splits into 2 and diverge to make room for it 12 of 33 What are the third levels of detail for fingerprints? Ridge unit shapes and relative positions of sweat pores 13 of 33 What are the different types of volar pads? Accidentals, twinned loops, composites, loops, whorls and arch 14 of 33 What are accidentals? Two or more deltas, possess characteristics common to all types, doesn't conform to any pattern 15 of 33 What are twinned loops? 2 well defined loops, 2 deltas and sub-divided by ridge tracing 16 of 33 What are composites? Combination of patterns with 3 or more deltas 17 of 33 What are loops? 1 or more ridges curve from one side and back over to same side 18 of 33 What are arches? Ridges from one side curve to the other 19 of 33 What are whorls? Re-curving ridge within inner area that is cut/touched, makes a complete circuit with 2 deltas 20 of 33 What are 2 systems used to store fingerprints? Fingerprint form database and crime scene mark database 21 of 33 What are 3 checks to process fingermarks? Manual comparison, Ident1 and ACE-V 22 of 33 What is Ident1? Database for holding, searching and comparing biometric info, used after arrested 23 of 33 What is ACE-V? Analysis, comparison, evaluation and verification 24 of 33 Why use the 3 checks to process fingermarks? ACPO requirements 25 of 33 What analysis techniques could you use for fingermarks? Sideways pressure distortion, downwards depositing pressure, matrix, clarity, substrate, developmental medium, other observations 26 of 33 What is deposition pressure? Downwards pressure, heavier = result in ridges appearing thicker and furrows narrow 27 of 33 What is the matrix? The substance deposited by fingermark and developed 28 of 33 What is clarity? The presence of detail - visual quality of ridge detail 29 of 33 What is a substrate? The surface in which the ridge detail is deposited 30 of 33 What developmental mediums could you use for fingermarks? Lifting, photographing, magna powder, aluminium powder, black powder 31 of 33 What decides the developmental medium used on fingermarks? Surface type 32 of 33 What is streamlined forensic reporting? Produces forensic evidence, preserves fairness and confidence, proportionate evidence according to needs of case, reduces costs, delays and bureacracy 33 of 33
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