Understanding Soil Formation & Classification: Horizons, Types, & Organisms, Schemes and Mind Maps of Soil Mechanics and Foundations

Download Understanding Soil Formation & Classification: Horizons, Types, & Organisms and more Schemes and Mind Maps Soil Mechanics and Foundations in PDF only on Docsity! Name: ________________________________ Per: ________ Soil Formation & Classification Reading How Soil Forms (pg. 250) Soil Horizon ____ 1. A ____ 2. B ____ 3. C Makeup of Soil Layer a. Topsoil b. Weathered rock particles c. Subsoil 4. Label each of the soil horizons shown in the three drawings as A, B, or C horizon. 5. Which soil horizon is most similar to bedrock? 6. Which soil horizon forms last? 7. Which soil horizon is most important for growing food? Why? 8. Circle the letter of each sentence that is true about the rate of soil formation. a. It is faster in areas that are cold. b. It is faster with limestone than granite. c. It is slower in areas that are dry. d. It is unaffected by the type of rock being weathered. Soil Types (p. 251) 9. What are the three factors that scientists use to classify the different types of soil into groups? a. b. c. 10. When scientists classify the types of soil by composition, what categories of soil do they have? a. b. c. 1-3 Match the soil horizon with its makeup.