Physical Evidence Notes PDF

Physical Evidence Notes Name ____________________________ 1. The value of trace forensic evidence was first recognized by Edmund _______________ in 1910. The Locard’s Exchange Principle states that "with _______________ between two items, there will be an _______________." 2. Complete each section...

Physical Evidence Notes Name ____________________________ 1. The value of trace forensic evidence was first recognized by Edmund _______________ in 1910. The Locard’s Exchange Principle states that "with _______________ between two items, there will be an _______________." 2. Complete each section below as you discuss the notes in class. Paint What is an example of a "class" characteristic? __________________ What is an example of an "individual" characteristic? __________________ Glass What are three characteristics of glass that could be used to match glass from a crime scene to a suspect? _______________________ _______________________ _______________________ Explosives How do scientists match bombs and other explosive devices to suspects? ________________________________ ___________________________________________________________________________________________ Ballistics What does the abbreviation GSR represent? ________________ _____________________ What is rifling? ______________________________________________________________________________ What does the acronym IBIS mean? ______________________________________________________________ Dust & Dirt How could dust or dirt be used in an investigation? __________________________________________________ ___________________________________________________________________________________________ Fingerprints What are the 3 main types of fingerprints? ________________________________________________________ What does the acronym AFIS mean? ____________________________________________________________ Impression Evidence Give 3 examples of impression evidence. _________________________________________________________ Fractures Matches What are fracture lines? _______________________________________________________________________ Give an example of a type of evidence that might be identified using a fracture match. ______________________ Wounds What information can be learned from a wound? ____________________________________________________ ___________________________________________________________________________________________ T. Trimpe 2006 http://sciencespot.net/ Documents Besides handwriting, what else could an investigator use to match a ransom note to a suspect? _______________ ___________________________________________________________________________________________ Insects What type of insects are helpful in a murder investigation? ____________________________________________ What is PMI? ________________________________________________________________________________ DNA What types of tissues might be used for DNA testing? _______________________________________________ What does the acronym CODIS mean? ___________________________________________________________ Skeletal Remains What 4 things can be determined from skeletal remains? _________ __________ ____________ ____________ What type of scientist studies skeletal remains? ________________ _________________________ Body Fluids What type of clues could investigators get from body fluid samples? Give two examples. __________________________________________ __________________________________________ Hairs & Fibers How can hairs and fibers be used in an investigation? ________________________________________________ ___________________________________________________________________________________________ What must be present in a hair sample to test for DNA? _____________________________ T. Trimpe 2006 http://sciencespot.net/