1. Which measurement and relationship most accurately reflected your partner’s height? 2. Which measurement was the least accurate in estimating your height?

1. Explain why using the Canons of Proportions on teenagers to estimate height would provide less accurate data than using the canons of proportions on adults. 2. Describe a crime scene that could use the Canons of Proportions to help estimate the height of a person.

1. A beam of light passes through air into a second medium. Angle 1 (angle of incidence) is 33°. Angle 2 (angle of refraction) is 48°. Calculate the refractive index. Show all your work. 2. List characteristics of glass that can be used to compare suspect glass samples to glass found at a crime scene.

You are testifying as an expert in glass evidence. You want to demonstrate that the evidence glass found embedded in a blanket came from a broken headlight of a vehicle suspected to be the vehicle involved in a hit-and-run accident. Describe the demonstration that you would show the jury.

A window is broken. The group of vandals who were standing behind the broken window run away. If the broken glass projected inward, how is it possible that a small amount of trace broken glass evidence was found on their clothes?

1. Did the density of the glass found on any of the four suspects match the density of the glass found at the crime scene? Explain your answer. 2. Check your results with your classmates. How did your results compare to those of the rest of the class?

1. Suggest other liquids to test for refractive index that you think might give you a higher refractive index than any of the liquids selected in this experiment. 2. As the thickness of the liquid increases, what effect might that have on the bending of light? Will the bending become more pronounced or less pronounced?

1. Why would the match of glass from a crime scene and a suspect be considered to be class evidence? 2. Explain refraction of light. Include in your answer the following:  two different mediums  light velocity density

1. A refractive index of olive oil is equal to 1.47. It is calculated as a ratio between what two numbers? 2. List five different characteristics to note when comparing a tire from a suspected tire to the tire mark found at the crime scene.

Do further research on imprint or impression evidence in the O.J. Simpson or Ted Bundy cases, or research case studies not mentioned in the text that had their cases resolved as a result of impression or imprint evidence. Submit a written report on your findings.