This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 6 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If you increase the surface area of a rock, how will it affect the rate at which it weathers? A) It will weather more quickly. B) It will have no effect because surface area is not a factor in weathering. C) It will weather more slowly. D) It will have no effect because a rock does not have a surface area. Show Answer Correct Answer: A) It will weather more quickly. 2. In addition to the rock particles the soil contains- A) Air and water. B) Water and plants. C) Minerals, organic matter, air and water. D) None of above. Show Answer Correct Answer: C) Minerals, organic matter, air and water. 3. A gardener wants to add humus to his soil because it contains a lot of nutrients and helps retain water. What does humus form from? A) Sand. B) Rocks and minerals. C) Decayed animals and plants. D) Volcanic lava. Show Answer Correct Answer: C) Decayed animals and plants. 4. Soil used for construction ..... A) Clay. B) Loam. C) Silt. D) Sand. Show Answer Correct Answer: D) Sand. 5. Soil layers are called horizons because ..... A) The layers are all different. B) The layers are vertical. C) The layers are horizontal. D) The layers are above one another. Show Answer Correct Answer: C) The layers are horizontal. 6. A large chemical company disposes of its toxic chemical waste in a landfill, where the toxic chemical waste slowly leaks into the soil. Which result will most likely occur because of the toxic chemical leak into the soil? A) The soil's fertility will decrease. B) The soil's fertility will increase. C) The soil's fertility will increase and then decrease. D) The soil's fertility will remain the same. Show Answer Correct Answer: A) The soil's fertility will decrease. 7. Which of these characterized as having the finest particles that holds the greater amount of water? A) Clay. B) Loam. C) Sand. D) None of above. Show Answer Correct Answer: A) Clay. 8. Which of the following processes will most likely contribute to the development of soil? A) Volcanic eruptions that make new land. B) Building up of snow in very cold areas. C) Breaking down of rock by wind, water, and ice. D) Migration of animals to warmer climates. Show Answer Correct Answer: C) Breaking down of rock by wind, water, and ice. 9. This land is capable of a wide variety of agricultural uses that involve regular cultivation where in fact, the easiest land to farm. Which land and soil class does it refer to? A) Land and Soil Capability Class 8. B) Land and Soil Capability Class 3. C) Land and Soil Capability Class 2. D) Land and Soil Capability Class 1. Show Answer Correct Answer: D) Land and Soil Capability Class 1. 10. Sand feels ..... A) Soft. B) Gritty. C) Wet. D) None of above. Show Answer Correct Answer: B) Gritty. 11. Which of these IS NOT affected by soil pH? A) Availability of most of the essential nutrients. B) Activity of Microorganisms. C) Performance of some herbicides. D) The soil water holding capacity. Show Answer Correct Answer: D) The soil water holding capacity. 12. Which of the following is the combination of two different copies of an allele for a gene? A) Homozygous dominant genotype. B) Heredity. C) Homozygous recessive gentoype. D) Heterozygous genotype. Show Answer Correct Answer: D) Heterozygous genotype. 13. In a soil profile with O, A, E and B horizons, evaluate which of the following is the least amount of clay in the horizon. A) O. B) A. C) B. D) E. Show Answer Correct Answer: D) E. 14. Control the cell's activities; contains the cell's DNA A) Mitochondria. B) Cell membrane. C) Nucleus. D) Golgi body. Show Answer Correct Answer: C) Nucleus. 15. What does weathering mean? A) To form or create new. B) To build up. C) To break down. D) To completely destroy. Show Answer Correct Answer: C) To break down. 16. How many years does soil take to form? A) 5 Years. B) 1000 Years. C) 100 Years. D) 50 Years. Show Answer Correct Answer: C) 100 Years. 17. All of the layers of soil together can be called a ..... A) Profile. B) Horizon. C) Row. D) Layer. Show Answer Correct Answer: A) Profile. 18. If erosion occurs, which of the following negative effects may happen? A) Landslides. B) Destruction of homes and animal habitats. C) Pollutes water with soil. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. Which of the following affects the weathering rate? A) Climate. B) Type of rock. C) Both A & B. D) Neither A nor B. Show Answer Correct Answer: C) Both A & B. 20. The remains of something that was once alive. A) Pores. B) Abiota. C) Organic matter. D) Decomposition. Show Answer Correct Answer: C) Organic matter. ← PreviousNext →Related QuizzesSoil Science QuizzesFundamentals Of Soil Science Quiz 1Fundamentals Of Soil Science Quiz 2Fundamentals Of Soil Science Quiz 3Fundamentals Of Soil Science Quiz 4Fundamentals Of Soil Science Quiz 5Fundamentals Of Soil Science Quiz 7Fundamentals Of Soil Science Quiz 8Fundamentals Of Soil Science Quiz 9Fundamentals Of Soil Science Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books