16 Jan footwear impression evidence worksheet answers

find each clue, make sure to send all evidence to the lab or visit the police station and answer any questions that are asked. Magnetic fingerprint brush. The print evidence would have to be compared to suspect’s shoes. Footwear and Tire Impressions P roper collection and preservation of footwear and tire impression evidence is essential to capture the detail observed at the crime scene. 2 Marks in the form of imprints deposited onto surfaces resulting from the interaction of objects with of%evidence%left%behinddepends%largelyon%the%type%of%surface%traveled.%For% example,%a%shoewill%leavean%impression%in%loosesand,%but%on%a%hard%surface imprint evidence. The answer was found in the kitchen. The impression was later bagged and sent to the lab, where no pieces of trace evidence were found. Footwear Impression It gets taken to the Forensic Identification Unit. Test Impressions Suspect's shoes or tires should be collected as soon after the incident as possible to minimize the amount of change to the tread or sole through additional wear. Accidental and manufacturing details in footwear impressions are addressed on the quiz. If shoes are to be Test impressions from shoes will be made at the laboratory at the time of comparison. Point of Entry Evidence (clue) How can it be used to solve the crime? 3 pages. Lecture 1-2 Introduction to the Field of Forensic Identification (1).pdf. In the first part of this experiment, you will make an impression and collect it as evidence by casting it-that is, making a mold and preserving it for analysis in the lab. Of shoe print and tire track evidence in particular, the report said, "The educational background of forensics scientists who examine shoeprints and tire track impressions runs the gamut from a high school diploma to scientists with Ph.D.s. The choice of collection technique is based on the type of impression: • Two-dimensional impressions are found on flat, hard surfaces such as wood, tile, or linoleum Make a control print of each of your suspect shoes. Complete the worksheet and quiz to gauge your understanding of footwear forensic examination. Suspect shoes (knowns) Magnetic fingerprint powder, 1-2 tablespoons in a cup or small jar. Impression Evidence: Footwear and Tool Marks Cases from the Crime Scene to the Courtroom By Nicholas Petraco, MS, D-ABC Nicholas D. K. Petraco, PhD In: Forensic Science Handbook, Volume II; CRC Press, Boca Raton, FL, 2016. 6. Thus, the preferred methods of collection are quite different. In the second part of this experiment you will analyze the cast and compare it to a footwear sample. ... After covering the bodies with a sheet, he stepped on it, the bottom of his shoes were clean but he created a shoe impression in the blood on the floor underneath the sheet b. Evidence in the couple’s bedroom, a palm print. Footwear impressions allow you to match the impression with actual footwear The soil had been disturbed, and the police were able to photograph and make an impression mould (casting) of the footprint. Subtotal $ 1480 Profit Margin (30%) $ 444 Grand TOTAL $ 1924 Page 1 of 3 f. Impression Evidence Analysis (1 hour/analysis) $ 150/analysis 1 $ 150 Footprints are compared against possible sources based on class and individual characteristics. 2 pounds of dental stone and 12 ounces of water; place dental stone in ziplock bag and add water massage for 3-5 mins, pour stone alongside the impression to flow on the impression Paint evidence should be placed in what kind of containers Terms for lecture 1-3 Footwear Impression Evidence.pdf To do this you will need a sheet of paper, a shoe cleaning sponge and a suspect shoe. Procedure: Part One. Identifications are largely subjective and are based on the examiner's experience." 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