This quiz works best with JavaScript enabled. Home > Agriculture > Soil Science > Fundamentals Research > Fundamentals Of Soil Science – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 9 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Nutrients are lost from the soil when A) Products from plants are harvested. B) Animals are harvested. C) Animals are removed from the farm. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Organic matter is made of materials that ..... A) Were once living. B) Were once nonliving. C) Were once living and nonliving. D) None of above. Show Answer Correct Answer: A) Were once living. 3. What physical property of soil determines if it retains water? A) Weight. B) Texture. C) Particle size. D) Color. Show Answer Correct Answer: C) Particle size. 4. When you hear the word "potash", what element does it refer to? A) Phosphorus. B) Potassium. C) Iron. D) Nitrogen. Show Answer Correct Answer: B) Potassium. 5. This type of soil is made of tiny pieces of rock. A) Sand. B) Clay. C) Humus. D) Loam. Show Answer Correct Answer: A) Sand. 6. This is the unconsolidated material underlying the solum, relatively unaffected by the soil genetic processes. A) Horizon C. B) Horizon E. C) Horizon A. D) Horizon B. Show Answer Correct Answer: A) Horizon C. 7. Why is soil so important? A) Eaten by animals. B) Eaten by people. C) Keeps Earth clean. D) Provides food and support for plants. Show Answer Correct Answer: D) Provides food and support for plants. 8. In which soil type would water have difficulty draining? A) Sand. B) Silt. C) Clay. D) None of above. Show Answer Correct Answer: C) Clay. 9. Chemical weathering occurs at a greater rate in climates that are A) Cold and wet. B) Warm and wet. C) Hot and dry. D) Cold and dry. Show Answer Correct Answer: C) Hot and dry. 10. What is the topmost layer of the earths crust? A) Soil. B) Loam. C) Sand. D) Caly. Show Answer Correct Answer: A) Soil. 11. Which name starts with a lower case letter? A) Common Name. B) Genus. C) Species. D) None of above. Show Answer Correct Answer: C) Species. 12. In what type of climate is Chemical weathering more rapid? A) Wet. B) Hot. C) Both A & B. D) Neither A nor B. Show Answer Correct Answer: C) Both A & B. 13. Soil contains organic material. What is organic material? A) Anything that is alive. B) Anything that is dead and has never lived. C) Anything living or once living. D) Dirt. Show Answer Correct Answer: C) Anything living or once living. 14. The breaking down of rocks into smaller pieces. A) Erosion. B) Weathering. C) Sediment. D) Sand. Show Answer Correct Answer: B) Weathering. 15. There are three classes of rocks, identify which of the following did magma belongs? A) Metamorphic rocks. B) Intrusive rocks. C) Igneous rocks. D) Sedimentary rocks. Show Answer Correct Answer: C) Igneous rocks. 16. Where do the minerals (inorganic materials) that form soil come from? A) Plant and Trees. B) Weathering and Erosion of rocks. C) Climate and Air. D) Sunlight, Plants and Dirt. Show Answer Correct Answer: B) Weathering and Erosion of rocks. 17. A soil with bulk density of 1.30g/cm3 and a particle density of 2.60g/cm3 will have a porosity of ..... A) 50%. B) 25%. C) 75%. D) 5%. Show Answer Correct Answer: A) 50%. 18. Which of the following has led to an estimated 70 to 90 percent increase in food production according to the World Bank? A) Sustainable agriculture. B) Increased acreage. C) Fertilizer. D) Hydroponics. Show Answer Correct Answer: A) Sustainable agriculture. 19. Green manuring can improve levels of organic matter in the soil. This is when A) The type of crops grown in a paddock is changed regularly in a planned order. B) Fast-growing crops are grown and ploughed back into the soil before they seed. C) Part of a crop not harvested for sale can be returned to the soil. D) The soil is not cultivated, but seeds are sown directly into the soil. Show Answer Correct Answer: B) Fast-growing crops are grown and ploughed back into the soil before they seed. 20. The name below that NOT including rocks is ..... A) Baloon. B) Marble. C) Limestone. D) Granite. Show Answer Correct Answer: A) Baloon. 21. Soil is a loose mixture of: A) Organic materials. B) Organic and inorganic materials. C) Dead and decaying micro organisms. D) None of above. Show Answer Correct Answer: B) Organic and inorganic materials. 22. Horizon O is an organic horizon that comprises three sub-horizons. Which of the following did sapric (highly decomposed organic horizon) belongs? A) Oe. B) Oi. C) Ou. D) Oa. Show Answer Correct Answer: D) Oa. 23. Soil is composed of all of these natural materials EXCEPT A) Animal remains. B) Weathered rock. C) Plastic substances. D) Plant matter. Show Answer Correct Answer: C) Plastic substances. 24. Plants need the following except one A) Pizza. B) Air. C) Light. D) Water. Show Answer Correct Answer: A) Pizza. 25. Fossils are made from A) Plastic toys. B) Sedimentary rocks. C) Water. D) None of above. Show Answer Correct Answer: B) Sedimentary rocks. 26. In soil there is ..... of mineral content A) 25%. B) 5%. C) 45%. D) None of above. Show Answer Correct Answer: C) 45%. 27. The water holding capacity is the highest in - A) Sandy soil. B) Clayey soil. C) Loamy soil. D) None of above. Show Answer Correct Answer: B) Clayey soil. 28. SWBAT describe how scientists classify soil. A) They base them into climate, plants, and soil groups. B) They base them into different soil groups. C) They place them into soil composition and soil type. D) They place them by colors. Show Answer Correct Answer: A) They base them into climate, plants, and soil groups. 29. Which layer of soil helps in purification of water? A) Parent rock. B) Topsoil. C) Sub soil. D) Humus. Show Answer Correct Answer: C) Sub soil. 30. Which type of soil feels soft and airy? A) Sand. B) Loam. C) Clay. D) None of above. Show Answer Correct Answer: B) Loam. ← PreviousNext →Related QuizzesSoil Science QuizzesAgriculture 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 6Fundamentals Of Soil Science Quiz 7Fundamentals Of Soil Science Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books