1. What are the soil classifications based off of? Percent of sand, silt, and

clay present in soil

2. How many soil texture classifications are there? 12

3. What are the hydrologic soil groups classified based off of? Infiltration

rates

4. What are the hydrologic soil groups? A, B, C, D

5. What are the soil horizons classified based off of? Primary material (eg

clay, organic matter, minerals, parent material (rock), bedrock)

6. What are the master horizons? O, A, E, B, C, R

7. ...