2. ______________ solids Refract a beam of light in two different light-ray components (wavelengths) Results in double refraction

3.  Crystalline

4. The numerical difference between these the two refractive indices of a crystalline solid is known as ________________.

5.  Birefringence

6. This is an example of.......

7.  Birefringence

8.  Technique used to determine the refractive index of a glass sample is known as the _____________ method.

9.  Immersion

10.  As the velocity of a fast moving projectile decreases, the irregularity of hole and cracks ____________.

11. increase

12. Exhibit (a) only shows a __________ fracture

13. Radial

14. Glass Collection True or False All broken glass at a crime scene must be collected, regardless of the size.

15. FALSE Know ALL of these steps for Glass collection  Collect all glass found for piecing  Submit all glass evidence found in the possession of the suspect  Collect only a representative sample of broken glass remaining at the crime scene

16. True or False Once collected glass should be wrapped up in paper to prevent further damage.

17. False, Packaged in solid containers to avoid further breakage

18. Soil Collection Standard/reference soils should be taken from the crime scene at various intervals within a ______-yard radius of the crime scene. This will be used as a comparison to questioned soil.

19. 100

20. Soil is a mixture of _______ and _________ material.

21. Soil is a mixture of organic and inorganic material.

22. An example of 100% inorganic soil is _________while an example of a nearly 100% organic soil would is ________.

23.  An example of 100% inorganic soil is sand while an example of a nearly 100% organic soil would is peat.

24. The inorganic part of soil is ________.

25. minerals

26. The organic part of soil is known as _______ which is made up of __________________.

27. Humas decayed plant and animal material

28. The forensic definition of soil includes many things, including:

29. 1. Bits of grass 9. Seeds 2. Cinders 10. Animal matter 3. Asphalt 11. Spores 4. paint 5. metals 6. concrete 7. Bricks 8. Vegetation

30. List the five major factors that influence a soil’s composition.

31. 1. Climate 2. Parent material 3. Living organisms 4. Topography 5. Time

32.  True or False Soil is class evidence - cannot be individualized to a particular location

33.  True

34.  True or False There is no classification system for soils

35.  True – only guidelines

36. True or False Soils can be easily transported

37. True – which makes it excellent trace evidence.

38. True or False Soils within a few meters horizontally or vertically differ

39. True

40. True or False After removing the first 2- 3 inches of top soil, a forensic soil analyst can tell if a body has been buried below.

41. True