Geography 101 Exam 3: Soil-Questions and Answers Graded A+

Geography 101 Exam 3: Soil-Questions and Answers Graded A+ What is soil? - ANSWER-1. Dynamic porous layer in which plants grow 2. Upper layer of lithosphere 3. Directly affects biosphere What is soil composed of? - ANSWER-1. Mineral particles 2. Organic matter CLORPT (soil forming factors)? - ANSWER-1. Climate 2. Organisms 3. Relief 4. Parent material 5. Time Climate (CLORPT) - ANSWER-Affects water and other factors Organisms (CLORPT) - ANSWER-Plants: organic matter Animals: breakdown organic material; mixing Relief (CLORPT) - ANSWER-Energy and water (hydrology) Parent material (CLORPT) - ANSWER-Rock composition Time (CLORPT) - ANSWER-Soil is not created overnight Soil profiles - ANSWER-Consist of soil "horizons" (may not all exist) Horizons - ANSWER-0, A, E, B, C, R O Horizon - ANSWER-Organic material (leaf litter) A Horizon - ANSWER-Topsoil; enriched by O E Horizon - ANSWER-Lighter color, has lost minerals through leaching B Horizon - ANSWER-Subsoil; darker, has minerals but lacks organic matter C Horizon - ANSWER-Weathered parent material R Horizon - ANSWER-Rock (not soil) How to classify soil? - ANSWER-1. Sight 2. Smell 3. Taste 4. Feel 5. Hear Classification of soil: Sight - ANSWER-Color Classification of soil: Smell - ANSWER-Organic material, minerals Classification of soil: Taste - ANSWER-Minerals, composition Classification of soil: Feel - ANSWER-Composition Classification of soil: Hear - ANSWER-Moisture, drainage