UNIT 3: SOIL COLOR

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Across
  1. 2. gives clues about the nature of the root zone
  2. 4. The relative difference between the mottle color and the matrix color.
  3. 7. coats the soil particles, making them dark
  4. 9. colors are due to iron oxide coatings on mineral grains
  5. 10. means that air moves freely into and out of the pore spaces
  6. 12. Color, such as red or yellow, or an intermediate color
Down
  1. 1. SPOTS
  2. 3. refers to the main body of soil in a horizon.
  3. 5. Relative purity of a color, from dull to bright
  4. 6. Relative darkness or lightness of a color, from black to white
  5. 8. Chart for color classification
  6. 11. – The percentage of exposed surface area occupied by mottles.