Forensic Lab Investigation Techniques

Mr. Comr guides Hudson High School students through a forensic lab investigation to solve a crime involving tire tracks on a baseball field. The lab involves using a caliper to measure tire track width, tire treads, and wheelbase of Matchbox cars, comparing these measurements to evidence. Students create tire track imprints and enter data into a calculator to determine the suspect. The video provides detailed instructions on using a caliper and emphasizes accuracy in measurements.

What was the crime scenario recreated in the forensic lab?

• A stolen car investigation

• A vandalized baseball field

• A missing person case

• A bank robbery

How many suspects were identified in the investigation?

• Five

• Four

• Three

• Six

What tool is used to take measurements in the lab?

• Tape measure

• Caliper

• Protractor

• Ruler

What is the first measurement taken with the caliper?

• Wheelbase

• Tire track width

• Tire tread depth

• Stance

What should you do if the caliper shows negative numbers?

• Recalibrate it

• Use a different caliper

• Replace the battery

• Ignore the reading

What is used to create tire track imprints?

• Water

• Ink

• Paint

• Chalk

What is measured to determine the stance of the car?

• Distance from left to right side of the car

• Distance between front and rear tires

• Width of the tire

• Height of the car

How is the wheelbase measured?

• From the front axle to the rear axle

• From the left tire to the right tire

• From the top to the bottom of the car

• From the front bumper to the rear bumper

What does the tire track and tread calculator help determine?

• The color of the car

• The speed of the car

• The best matching suspect car

• The age of the tire

What is the purpose of the forensic lab investigation?

• To learn about car mechanics

• To practice using digital devices

• To study the history of Matchbox cars

• To solve a crime using tire evidence