Using characteristics like colour, texture, weave, absorbency and flammability to identify a sample
What is fabric analysis?
spacing, connecting strokes, pressure and slant
What are characteristics of handwriting that can be analysed?
Investigators use their senses to record facts about a crime scene.
What is an observation?
This includes mud, sand, dirt, blood or other residues
What are trace materials that can be found on shoe/footprints?
Finger prints can be categorized into these 4 types...
What is loop, whorl, arch, or composite?
tread, wear patterns and other features can be used to match this type of evidence to a sample or specific make/model in a law enforcement data base
What tire track evidence?
the manipulated variable in a chromotography experiment?
What is the pen ink samples?
objects or materials found at a scene that can be used to make inferences can be made...can include finger prints, foot prints, hair/fiber samples, etc.
What is physical evidence?
detailed characteristics found on ridge patterns, like bifurcation, lakes, island, etc.
What are ridge characteristics?
Someone who collects and analyzes evidence from a crime scene, prepares reports and may testify in court about the evidence they collect
What is a forensic investigator?
The responding variable in a chromotography experiment
What is the separation of ink into different colours and speed of separation?
any evidence or objects that plays a role in proving/disproving a fact in a given circumstance/scenario...like fingerprints or DNA
What is circumstantial evidence?
Powder, special stickers/tape or photographs
What are ways fingerprints can be collected?
making a judgement or conclusion based on a bias or incomplete evidence
What is jumping to conclusions?
Verbal or written observations presented by witnesses that needs to be confirmed or validated by PHYSICAL evidence or additional witnesses.
What testimonial evidence?
Photograph, Sketch, Measure, or plaster print
What are ways to obtain foot/shoe prints?
Include colour, texture, odour and particle size/shape
What are soil characteristics?
Can assist investigators in matching samples to materials used by suspects (type of ink, etc.)
What is Chromatography?