This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Of Soil Science – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What soil is a mixture of sand, silt, and clay? A) Soil. B) Silt. C) Clay. D) Loam. Show Answer Correct Answer: D) Loam. 2. As surface area of a rock increases, the rate of weathering ..... A) Decreases. B) Increases. C) Stays Constant. D) None of above. Show Answer Correct Answer: B) Increases. 3. What layer is considered the 'B' layer of soil? A) Organic. B) Topsoil. C) Subsoil. D) Parent material. Show Answer Correct Answer: C) Subsoil. 4. What do we call dirt A) Air. B) Soil. C) Water. D) Ice. Show Answer Correct Answer: B) Soil. 5. All of the following are plant remains EXCEPT A) Dead leaves. B) Sand Particles. C) Seed covers. D) Dried twigs. Show Answer Correct Answer: B) Sand Particles. 6. Vertical section through the soil showing different layers is called A) Types of soil. B) Soil texture. C) Soil profile. D) None of the above. Show Answer Correct Answer: C) Soil profile. 7. Compaction is defined as ..... A) The mechanical process to increase soil density, to increase void and reduce permeability. B) The mechanical process to increase soil density, to reduce void and reduce permeability. C) The mechanical process to decrease soil density, to reduce void and reduce permeability. D) The mechanical process to decrease soil density, to increase void and reduce permeability. Show Answer Correct Answer: B) The mechanical process to increase soil density, to reduce void and reduce permeability. 8. Which of the following is NOT a property of soil? A) Color. B) Texture. C) Where it's located. D) Ability to retain water. Show Answer Correct Answer: C) Where it's located. 9. How many layers does a typical soil profile contain? A) 4 Layer. B) 5 Layers. C) 15 Layers. D) 100 layers. Show Answer Correct Answer: A) 4 Layer. 10. Several students investigate the characteristics of soil. The students observe samples of common soils. In one sample they observe that water drains through the soil easily. When they rub the soil between their fingers, it feels rough and scratchy, and its particles feel hard. The soil the students observed is most likely - A) Clay. B) Silt. C) Loam. D) Sand. Show Answer Correct Answer: D) Sand. 11. The very top layer of soil is mostly made of A) Solid rock. B) Clay and mineral deposits. C) A mixture of minerals and organic material. D) Mostly organic material (humus). Show Answer Correct Answer: D) Mostly organic material (humus). 12. Glacial till is the soil deposited by ..... A) Wind. B) Water. C) Gravity. D) Glaciers. Show Answer Correct Answer: D) Glaciers. 13. A rock containing iron is soft, crumbly, reddish in color. It's been chemically weathered by ..... A) Carbon Dioxide. B) Oxygen. C) Nitrogen. D) Sulfer. Show Answer Correct Answer: B) Oxygen. 14. Which soil would retain the most water? A) Loam. B) Sand. C) Silt. D) Clay. Show Answer Correct Answer: D) Clay. 15. Soil is formed when ..... are broken down by weather, water and living things over long periods of time. A) Trees. B) Rocks. C) Insects. D) Animals. Show Answer Correct Answer: B) Rocks. 16. Which of the following is a disadvantage of using hydroponics? A) Slower plant growth. B) Costs are higher than soil culture. C) Lower crop yields. D) Weeding and cultivation are required. Show Answer Correct Answer: B) Costs are higher than soil culture. 17. The average weather condition in an area over a long period of time is called A) Temperature. B) Climate. C) Weather. D) Humidity. Show Answer Correct Answer: B) Climate. 18. Soil has black color and its best for growing plants A) Clay. B) Sand. C) Organic. D) None of above. Show Answer Correct Answer: C) Organic. 19. In which soil type would water drain easily? A) Sand. B) Silt. C) Clay. D) None of above. Show Answer Correct Answer: A) Sand. 20. Which particle reduces the water holding capacity of soil? A) Sand. B) Silt. C) Clay. D) None of above. Show Answer Correct Answer: A) Sand. ← PreviousNext →Related 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 8Fundamentals Of Soil Science Quiz 9Fundamentals Of Soil Science Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books