edpuzzle blood spatter evidence\npart a: watch the blood spatter 101 video on edpuzzle to help you complete…

edpuzzle blood spatter evidence\npart a: watch the blood spatter 101 video on edpuzzle to help you complete this section.\n1. what does bpa represent? \n2. what are the three types of blood patterns?\n - ____________ (or drip) stains occurs when ___________ pulls blood downward to the floor or surface. they tend to be ___________ and fat without ________.\n - ___________ stains occurs when a bloody object comes in contact with another object or surface; appears as _________ or stripes\n - spatter (or ___________) patterns occur when a __________ is applied to a blood object or pool and are classified as high, medium, or low _________. the angle of ___________ is determined by measuring the length and width of each stain.\n - lasers can be used to determine the point of __________, or where the source of the blood was located\n\npart b: watch the blood spatter basics video on edpuzzle to help you complete this section.\n1. the trainers created _________ scenes to help police officers learn how to investigate crime scenes with blood evidence.\n2. the trainers use _________ blood to create their scenes.\n3. the height of the drop as well as the speed at which it is traveling affect the _________ and _________ of the blood droplets.\n4. true or false?\n __ blood evidence follows a definite pattern that can be applied to every crime scene.\n __ popular television shows, such as csi miami, are an accurate representation of how investigators analyze real crime scenes.\n __ blood evidence is easy to analyze and always tells investigators who is responsible for the crime.\n5. the trainer reminds the investigators that what they cant _______, they cant ______ in a case or court of law.

edpuzzle blood spatter evidence\npart a: watch the blood spatter 101 video on edpuzzle to help you complete this section.\n1. what does bpa represent? \n2. what are the three types of blood patterns?\n - ____________ (or drip) stains occurs when ___________ pulls blood downward to the floor or surface. they tend to be ___________ and fat without ________.\n - ___________ stains occurs when a bloody object comes in contact with another object or surface; appears as _________ or stripes\n - spatter (or ___________) patterns occur when a __________ is applied to a blood object or pool and are classified as high, medium, or low _________. the angle of ___________ is determined by measuring the length and width of each stain.\n - lasers can be used to determine the point of __________, or where the source of the blood was located\n\npart b: watch the blood spatter basics video on edpuzzle to help you complete this section.\n1. the trainers created _________ scenes to help police officers learn how to investigate crime scenes with blood evidence.\n2. the trainers use _________ blood to create their scenes.\n3. the height of the drop as well as the speed at which it is traveling affect the _________ and _________ of the blood droplets.\n4. true or false?\n __ blood evidence follows a definite pattern that can be applied to every crime scene.\n __ popular television shows, such as csi miami, are an accurate representation of how investigators analyze real crime scenes.\n __ blood evidence is easy to analyze and always tells investigators who is responsible for the crime.\n5. the trainer reminds the investigators that what they cant _______, they cant ______ in a case or court of law.

Answer

To solve these questions, we rely on knowledge from the study of blood spatter analysis (a subfield of Forensic Science, which falls under Natural Science, specifically in the context of crime scene investigation and forensic biology/medicine). Here are the answers based on standard blood spatter education:

Part A

  1. What does BPA represent?
    BPA stands for Bloodstain Pattern Analysis.

  2. What are the three types of blood patterns?

    • Passive (or drip) stains occur when gravity pulls blood downward to the floor or surface. They tend to be round and flat without satellite drops.
    • Transfer stains occur when a bloody object comes in contact with another object or surface; appears as smears or stripes.
    • Spatter (or impact) patterns occur when a force is applied to a blood object or pool and are classified as high, medium, or low velocity. The angle of impact is determined by measuring the length and width of each stain.
    • Lasers can be used to determine the point of origin, or where the source of the blood was located.

Part B

  1. The trainers created mock scenes to help police officers learn how to investigate crime scenes with blood evidence.

  2. The trainers use synthetic blood to create their scenes (to avoid biohazard risks and for consistency).

  3. The height of the drop as well as the speed at which it is traveling affect the size and shape of the blood droplets.

  4. True or False?

    • $\boldsymbol{\text{False}}$: Blood evidence follows a definite pattern that can be applied to every crime scene. (Patterns vary by context, surface, and force.)
    • $\boldsymbol{\text{False}}$: Popular television shows, such as CSI Miami, are an accurate representation of how investigators analyze real crime scenes. (TV dramatizes; real analysis is more complex.)
    • $\boldsymbol{\text{False}}$: Blood evidence is easy to analyze and always tells investigators who is responsible for the crime. (Analysis is nuanced; blood alone rarely identifies a culprit.)

  5. The trainer reminds the investigators that what they can’t document, they can’t prove in a case or court of law.

These answers align with foundational concepts in bloodstain pattern analysis, forensic science education, and crime scene investigation protocols.