[DOWNLOAD] Forensic Science Fundamentals And Investigations Chapter 3 Review Answers | HOT!
These pieces of evidence were photographed and sampled. The landowner remembered having seen similar tire marks leading into another wooded area two miles up the road. The officer investigated these marks and found several more black walnut stumps...
[FREE] Forensic Science Fundamentals And Investigations Chapter 3 Review Answers | HOT
Based on the evidence, he was convicted, fined, and sent to prison for six years. An observant investigator was able to collect sufficient evidence for a jury to find the man guilty of stealing the trees. Vocabula ry analytical sk identify ills the...
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For example, if you are sitting in a room and everything is still, you are unlikely to be filled with thoughts about the color of the sofa, the shade of the light, or the size and shape of the walls. But if a cat walks in, or you hear a loud bang, you will perceive these changes in your environment. Paying attention to the details of your surroundings requires a conscious effort. It is difficult to believe, but our brains definitely play tricks on us. Our perception is limited, and the way we view our surroundings may not accurately reflect what is really there. Perception is faulty; it is not always accurate, and it does not always reflect reality. Whether observing at a crime scene or examining collected evidence in the laboratory, the forensic examiner must be able to identify the evidence, record it, and determine its significance.
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Forensic Science Fundamentals And Investigations Chapter 2 Review Answers
The trained investigator collects all available evidence, without making judgments about its potential importance. That comes later. Knowing which evidence is significant requires the ability to recreate the series of events preceding the crime. The first step is careful and accurate observation Figure Figure How information is processed in the brain. Information from our senses What we pay attention to Perception Short-term memory Long-term memory information that is not really there. If we are reading a sentence and a word is missing, we will often not notice the omission but instead predict the word that should be there and read the sentence as though it is complete. Our brains will also apply knowledge we already have about our surroundings to new situations. In experiments with food coloring, a creamy pink dessert is perceived to be strawberry-flavored even though it tastes of vanilla.
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Our minds have learned to associate pink with strawberries and apply that knowledge to new situations—even when it is wrong. An interesting aspect of our perception is that we believe what we see and hear, even though our ability to be accurate is flawed. People will stick to what they think they saw, even after they have been shown that it is impossible. If you are feeling like your brain is rather defective, do not worry: the brain, while faulty, is still good at providing us with the information we need to survive. Filtering information, filling in gaps, and applying previous knowledge to new situations are all useful traits, even if they do interfere sometimes. Understanding our limitations helps us improve our observation skills, which is extremely important in forensic science. Criminal investigations depend on the observation skills of all parties involved—the police investigators, the forensic scientists, and the witnesses.
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China, The suspect in a stabbing death confessed after flies were used to determine which knife in the village had blood on it. All of the knives of the village were collected, and when the flies all landed on just one knife, the man confessed. Not surprisingly, the perceptions of witnesses can be faulty, even though a witness may be utterly convinced of what he or she saw. Have you ever noticed that you can walk along the street or ride in a car and be totally unaware of your surroundings? You may be deeply involved in a serious conversation or hear some disturbing news and lose track of events happening around you. Your focus and concentration may make an accurate accounting of events difficult. Our emotional state influences our ability to see and hear what is happening around us. If people are very upset, happy, or depressed, they are more likely not to notice their surroundings. Anxiety also plays a big part in what we see and what we can remember.
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Our fear at a stressful time may interfere with an accurate memory. Victims of bank robberies often relate conflicting descriptions of the circumstances surrounding the robbery. Their descriptions of the criminals committing the robbery often do not match Figure For example, most people can recall exactly where they were when they first heard of the attack on the World Trade Center towers in Manhattan on September 11, How a person looks, walks, stands, and uses hand gestures all contribute to our picture of his or her appearance. Think about your family members. How would you describe them? What makes them unique? We also form images of familiar places. Our homes, school, and other places we might often visit e. Eyewitness accounts of crime-scene events vary considerably from one person to another. What you observe depends on your level of interest, stress, concentration, and the amount and kind of distraction that may be present.
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Our prejudices, personal beliefs, and motives also affect what we see. Memory fades with time, and our brains tend to fill in details that we feel are appropriate but may not be accurate. The testimony of an eyewitness can be very powerful in persuading the jury one way or another; knowing the shortcomings of eyewitness testimony is necessary to ensure that justice is carried out appropriately.
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Scheck and Peter J. Neufeld in Its purpose was to reexamine post-conviction cases individuals convicted and in prison using DNA evidence to provide conclusive proof of guilt or innocence Figure After evaluating more than wrongful convictions in the United States, the Innocence Project found that faulty eyewitness identification contributed up to 87 percent of those wrongful convictions. Eyewitness errors included mistakes in describing the age, and facial distinc- Figure Gary Dotson was the first individual tiveness of the suspect. These mistakes resulted shown to be innocent by the Innocence Project. When evaluating eyewitness testimony, the investigator must discriminate between fact and opinion. What did the witness actually see?
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Often what we think we see and what really happened may differ. The act of someone fleeing from the site of a shooting might imply guilt but could also be an innocent bystander running away in fear of being shot. Witnesses have to be carefully examined to describe what they saw eyewitness evidence , not what they thought happened opinion. On completion of witness examination, the examiner tries to piece together the events facts preceding the crime into a logical pattern. The next step is to determine if this pattern of events is verified by the evidence and reinforced by the witness testimony.
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Here are some basic tips: 1. We know that we are not naturally inclined to pay attention to all of the details of our surroundings. To be a good observer, we must make a conscious effort to examine our environment systematically. For example, if you are at a crime scene, you could start at one corner of the room and run your eyes slowly over every space, looking at everything you see. Likewise, when examining a piece of evidence on a microscope slide, look systematically at every part of the evidence. We know that we are naturally inclined to filter out unimportant information. However, at a crime scene, we do not know what may turn out to be important.
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In this situation, we can consciously decide to observe everything, no matter how small or how familiar, no matter what our emotions or previous experiences. So we train ourselves to turn off our filters, and instead act more like data-gathering robots. We know that we are naturally inclined to interpret what we see, to look for patterns, and make connections.
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Blood Spatter Lab Answer Key Learn vocabulary, terms, and more with flashcards, games, and other study tools. If you prefer, you also have the option of writing your answers down on a sheet of paper. At the bottom of the last page is a link to the answers! My students LOVE making and learning by analyzing their own spatter. Blood spatter lab Lab During class we completed a lab in which we used a pipette to drop one drop of a red fluid fake blood onto a sheet of paper from a certain height using a meter stick. Projected Bloodstains created by the application of force to the area where the blood originated.
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Methods of decontamination. Blood Spatter Pattern Station 2: Height to Blood Spot Diameter Relationship Bloodstain and Spatter Lab Background: One technique used by crime scene investigators is the… Bloodstains cannot always be carried back to the lab, so care in documenting the scene is of utmost importance. Start studying Forensic science Chapter 6 review Questions. The report may also guide judges in passing fair judgment on crime suspects. Effect of Height on Blood Spatter. It's a platform to ask questions and connect with people who contribute unique insights and quality answers. You could not unaided going next book stock or library or borrowing from your contacts to approach them. The position of blood spatter analyst became popular in recent years through the success of televisions shows, such as Dexter.
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In fact, St. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Separation first, then quantification. Due to this key evidence, it indicates that Patient B has Type 2 diabetes, because insulin was produced, but not efficient in transporting glucose to cells. Section 3 Identify key performance indicators students will develop in this PBL. Create blood spatters from known heights and compare them with unknown samples. Anna's blood spatters found at the crime scene were from an angle of 90 degrees. On a day cut short by a juror's sudden illness, a renowned blood-spatter expert testified Thursday that blood on a sock found in O. Blood spatter analyst jobs typically take place in the lab, and you may be required to know how to use and maintain crime scene lab equipment. Using a blood drop, students conduct an experiment designed to.
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We are going to study how blood spatter can be informative in a forensic investigation. Discovery Education Experience provides engaging high-quality content, grab-and-go digital lessons, creative collaboration tools, and practical professional learning resources to give educators everything they need to engage all learners and create a lasting educational impact in any learning environment. In this lab, you will analyze blood spatter in three dimensions. Police use many different scientific techniques to figure out who the bad guy is. Students get to create an artificial kidney model to filter simulated blood.
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In this activity we learn about the studding the crime scene, and how the blood spatter will helps us rule out who murder that person or it was a natural dearth. Medical face masks are intended to resist liquid penetration based on a number of different factors, including the surface tension and viscosity of the fluids themselves, as well as the structure and relative. For example, a blood test can be used to The healthcare professional who arranges your blood test will tell you whether there are any specific instructions you need to follow before your test.
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As a general rule; the greater the amount of force applied to the source of. For this case study your team will be investigating a crime scene involving blood spatter. See more ideas about forensic science, forensics, science. Just outside the little room, if a character has a high Perception, they'll notice a blood spatter on the ground. By analyzing bloodstain patterns, forensic investigators can often determine the movements of both victim and assailant. The specific reaction pattern of erythrocytes of a person to the antisera of one blood group; e.
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Blood Splatter. What components of blood can be examined? What can the blood spatter pattern tell us? Answers Dna crime scene. Grade 9—College. This is prior learning or a practical skill that is strongly recommended before enrolment in this module. Brian Wentzell, a blood spatter expert The jury in Dennis Oland's murder trial heard more details Friday about a key piece of evidence in the Crown's case against him — a brown sports jacket seized from his bedroom closet one week after his father's bludgeoned body was discovered.
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The videos are listed in the Blood Basics. And in case you missed it — they're all free. In order to explain your expert opinions to the jury, you went to your lab to recreate and recorded key patterns of blood spatter and staining from the case. Nash received those results, which were used against Jennings at trial. At a neutral pH it is green. Forensic Science with Criminology at Derby. Students needed to be able to reasonably discuss what their droplets would reveal about a crime while referencing key terminology such as parent droplet, satellite droplet, spines, and more. A DNA sample taken from a crime scene is compared with. What can dried blood tell an expert?
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Page 3 5. We explore questions surrounding the causes of criminal behaviour and whether nature or nurture is responsible for such characteristics. Other types of physical evidence may establish timelines and circumstantial indications of motive, opportunity, or means. Research on blood spatter behavior. The experiments are among multiple tests overseen by attorney Kathleen Zellner to demonstrate flaws in the prosecutors' original murder case against Steven Avery. PET Test Builder with answer keys. He will greet them and welcome them to the Russian Police Academy as though they are cadets in training. Blood spatter analysts investigate patterns of blood or blood spatter in violent crimes like murders to find the killer and determine what happened.
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For example, a bullet hole in a wall, ceiling, piece of furniture, etc. Item Which of the following is NOT a search method used to sift through a crime scene?. This resource includes a video to show students which explains exactly how to do each portion. The research led them to develop a theoretical model for predicting and interpreting blood spatter patterns resulting from a gunshot wound. Here is the Blood Spatter Lab that we go through.
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Start studying blood spatter key terms. Okay, this one isn't great, but to be fair, I put very little effort into it, a long time ago. In a typical laboratory setting where small containers of biological agents, radioactive materials, or hazardous chemicals are handled, a lab coat is the minimum required body protection. Through the activity I learned how to properly design a experiment with a correct procedure and accurate results. These patterns are little ridges on … Read More. This updated guidance continues to recommend standard, contact, and airborne precautions and emphasizes additional elements of infection prevention and control programs that should be in place to prevent the transmission of any infectious agents including respiratory pathogens such as MERS-CoV in healthcare settings.
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It came from an unknown male. Blood Spatter. Spatter Notes- continued 2. What are two key steps needed to make scientific progress? Describe the three types of Investigation; describe three ways scientists apply their answers? Decontamination is a combination of processes that removes or destroys contamination so that infectious agents or other contaminants cannot reach a susceptible site in sufficient quantities to initiate infection, or other harmful response. Upgrades Blood Slave. Having a job description is beneficial to the employer, job seeker, and the employee in various ways. B Blood type that contains B agglutinogens. Spatter Any time a token's health bar is changed so that it's total value is half or less of its maximum, a randomly selected, offset and rotated blood graphic will If that roll exceeds the current health value, a blood spatter appears.
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Blood Spatter Lab Answer Key
Need help getting started? Also explore over similar quizzes in this category. Patient B had symptoms and risk factors of diabetes, which included high blood pressure and high cholesterol, and increase in thirst and urination. These are recommendations only and may need to be varied according to the circumstances and type of setting for each outbreak. A key witness changed his story. Students will have the option to either complete a formal laboratory report for this experiment or for the experiment in the next activity. Think I might be coughing up blood at night! I wasn't sure how to handle the fake blood. We had to discover how height effects the size of blood spatters and from what height did the blood drop from. Blood spatter lab- ALL blood stained papers must have names and labels on them. This empowers people to learn from each other and to better understand the world.
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Talk with your ob-gyn or other health care professional about how much weight gain is best for your pregnancy. Spatter patterns allow investigators to reconstruct what happened at a crime scene. J a material that can be related to a single source 3. Hello, Big misconception about Forensic Science I here is, It involves working with dead Bodies only, involves direct contact with criminals,Involves risk as per movies and stuff show you know.
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Forensic Science Fundamentals And Investigations Chapter 3 Review Answers
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