exam 1 ss - SS 121 Exam#1 Study Questions CALIFORNIA...

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1SS 121 Exam #1 Study Questions CALIFORNIA POLYTECHNIC STATE UNIVERSITY Earth & Soil Sciences Department SS 121 Review Questions for Lecture Exam #1 (T.J. Rice) This multiple choice SS 121 practice exam is divided into subject areas followed by examples of questions pertinent to each subject area. REVIEW Chapters 1, 2 and 8 in the textbook, the SS 121 labs. #1 and #2 in the lab book and the lecture information, in order to find the answers to these questions. Miscellaneous Multiple Choice and True/False Questions for Chapters 1 & 2: x. Most of the different nutrients essential for growth are supplied to plants directly from the ______. A. rain water B. soil solution C. atmosphere D. cosmic radiation E. soil humus x. Which of the following is (are) essential plant nutrients? A. Cu B. Al C. Sr D. Pb E. all of the above x. Which of the following is considered to be a plant macronutrient? A. N B. P C. S D. Ca E. all of the above x. Soil occupies the ______part of the regolith. A. upper B. lower C. younger D. both B and C x. The lithosphere is made up of _________. A. air B. rock C. water D. plants and animals E. all of the above x. The layers of contrasting material found when one digs a hole in a soil are called _______. A. pseudoliths B. regoliths C. pedons D. horizons E. soil structure x. A soil profile consists of _________. A. the sum of chemical and physical data known about a soil B. the way a soil "feels" C. the boundaries of a particular soil D. the set of layers seen in a vertical cross section of a soil E. the general outline of a soil or group of soils when viewed from the side x. "Topsoil" is generally equivalent to which soil horizon? A. A B. B C. C D. D E. E
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x. "Subsoil" is generally equivalent to which soil horizon? A. A B. B C. F D. D E. E x. In a typical mineral soil in optimal condition for plant growth, approximately what percentage of the pore space would be filled with water and what percentage filled with air? A. 10% water and 90% air B. 90% water and 10% air C. 25% water and 25% air D. 50% water and 50% air E. 25% water and 75% air x. The amount of different sizes of mineral particles in a soil defines the soil ________. A. structure B. texture C. pore space D. solution E. profile x. The water in the soil typically differs from pure water because the soil water ________. A. contains organic compounds B. contains mineral nutrients C. is restrained in its flow by attraction to particle surfaces D. all of the above E. none of the above x. Compared to silt, clay-sized soil particles are characterized by ______. A. greater attraction for water B. greater proportion of primary minerals C. less tendency to form hard clods when dry D. less capacity to hold nutrients in plant-available forms x. Which of the following pH values represents a neutral condition? A. 1.0 B. 5.0 C. 6.0 D. 7.0 E. 10 x. Which of the following pH values represents the most acid condition? A. 1.0 B. 10.0 C. 7.0 D. 100 E. 5.55 x. Most (usually 80% or more) of soil potassium and calcium can be found in the form of _________________.
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