EARTH SCIENCE REVIEW TEST QUESTIONS AND ANSWERS ALREADY GRADED A+ 2024|GUARANTEED SUCCESS

CSU A team of specialist police, photographers and forensic scientists trained in collecting and analysing evidence. Pathology The study of disease and cause of death Brainpower 0:01 / 0:15 Ballistics the study of guns and bullets Toxicology the study of the effects of poisons and chemicals on the body Physical evidence Anything that is reasonably large and easy to see is Corpses dead body Core body temperature 37 degrees celcius Changes that occur after death skin discolors as the body breaks down and decomposes Tool marks type of physical evidence. Each type of tool leaves its own impression Track impression footprints from shoes and tyres Positive impression image that is exactly the same as the pattern on the shoe or tyre Negative impression formed if suspect crossed damp sand, mud, snow, grease, congealing blood Fingerprints small amounts of finger secretion left behind on non-porous materials such as glass Porous materials fabrics and raw timber absorb body fluids making it difficult to find fingerprints on them Fibres strands of natural materials such as hair, fur, fluff, wool and cotton, nylon and polyester. circumstantial evidence evidence that points to a suspect but cannot be used as proof that the person was there DNA deoxyribonucleic acid is a chemical present in the nucleus of body cells. Dioxins A poisonous chemicals that are present in tiny quantities in cigarette smoke, plastics and some industrial wastes Ricin A poison extracted from castor beans that is about 200 times more deadly than cyanide. Its symptoms are similar to natural diseases. Ante-mortem data Any information relevant to the person before they died e.g. age, medical records, piercings Autopsy A systematic dissection of a corpse Reconciliation Information collected in the autopsy must be compared with any ante-mortem data that has been collected gel electrophoresis separating DNA into fragments Fraud Someone pretending to be another identity Items that prove identity license, passport, credit card Biometric facial recognition measures the position of your facial features and compares them with those of photographs on file. extortion threats and blackmail Chromatography uses a solvent such as water or alcohol to dissolve and separate an ink into its component pigments