1. Soil: Soil 2. Radial Lines: Radial Lines 3. Concentric Lines: Concentric Lines 4. Density Gradient Tube: Density Gradient Tube 5. Tempered Glass: Tempered Glass 6. Stress marks: Stress marks Column B a. any disintegrated surface material, both natural and artificial, that lies on or near the earth's surface b. glass fractures lines which form on the surface opposite that of the penetrating force c. glass tubes 6 to 10 mm in diameter and from 25 to 40 cm in length filled with layers of different densities. d. glass which as been tempered so as not to crack or slither in the fashion of normal glass e. white fracture lines which are observed microscopically on a cross section of glass f. glass fractures lines which form on the same side as the penetrating force