Unit 7 Assessment: Hair Evidence and the Locard Exchange Principle Experiment

Complete the worksheet. Save your work and submit your finished worksheet to the unit 7 dropbox.

Part One

Hair Sample 1:

1. What characteristics do you observe from the hair (7 pts)?

2. What visual/microscopical characteristics do you observe (7 pts)?

3. What is the length of the hair (5 pts)?

Hair Sample 2:

4. What characteristics do you observe from the hair (7 pts)?

5. What visual/microscopical characteristics do you observe (7 pts)?

6. What is the length of the hair (5 pts)?

Part Two

7. How many hairs are present on each of the two tape lifts (5 pts)?

8. How many appear to be animal hairs (5 pts)?

9. How many appear to be human (5 pts)?

10. How many of the human hairs appear different from your own hair (5 pts)?

11. Have you successfully confirmed the validity of the exchange principle (5 pts)?