This quiz works best with JavaScript enabled. Home > Soil Science > Fundamentals Of Soil Science – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Fundamentals Of Soil Science Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is a factor that affects soil development? A) Time. B) Slope. C) Type of rock. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Which of the following is not an example of mechanical weathering A) Reaction with carbonic acid. B) Animal action. C) Freezing and thawing. D) Plant action. Show Answer Correct Answer: A) Reaction with carbonic acid. 3. Which type of soil has the smallest particles? A) Loam. B) Clay. C) Silt. D) Sand. Show Answer Correct Answer: B) Clay. 4. What two things determine the property of the soil created? A) The particle weight and climate. B) The particle size and type of parent material. C) The particles biota and topography. D) The particle color and shape. Show Answer Correct Answer: B) The particle size and type of parent material. 5. Why is soil important to us? A) It takes a very long time to produce. B) We use it for our crops and other food sources. C) It is finite (limited). D) All of the above. Show Answer Correct Answer: D) All of the above. 6. Which of the following best describes how soils are formed? A) As plants and animals break down, the carbon in their bodies turns into minerals that plants eat to survive. B) Over thousands of years, rocks are weathered down to small particles that mix with small amounts of decaying organic matter and living organisms. C) As animals consume plants, they convert the plant matter into minerals. The feces from the animals then forms the soil. D) Over thousands of years, carbon dioxide in the air converts into minerals that fall to the ground and form soil. Show Answer Correct Answer: B) Over thousands of years, rocks are weathered down to small particles that mix with small amounts of decaying organic matter and living organisms. 7. Which soil is the best for growing plants? A) Sand. B) Loam. C) Silt. D) Clay. Show Answer Correct Answer: B) Loam. 8. Properties of soil consist of ..... A) Location, size, shape, color. B) Size, shape, color. C) Texture, color, how well it holds water, and particle size, ability to support plant growth. D) How well it holds water, shape, ability to support plant growth. Show Answer Correct Answer: C) Texture, color, how well it holds water, and particle size, ability to support plant growth. 9. Which cell structure has a double membrane surrounding it? A) Golgi apparatus. B) Cytoplasm. C) Chloroplasts. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 10. This is termed used for a true soil or A and B horizons. A) Solum. B) Regolith. C) Saprolite. D) Liholith. Show Answer Correct Answer: A) Solum. 11. The strength of a ped is called its A) Structure. B) Structure type. C) Structure grade. D) Structure class. Show Answer Correct Answer: C) Structure grade. 12. The rotting dead matter in the soil is called- A) Humus. B) Gravel. C) Sand. D) None of above. Show Answer Correct Answer: A) Humus. 13. Summer season when mang Kanor planted his cucumber plant. a few weeks after, his plants begin to wilt and later the plants die. What type of soil moisture coefficients happened in the field? A) Field capacity. B) Hydroscopic coefficient. C) Saturation point. D) Permanent wilting point. Show Answer Correct Answer: D) Permanent wilting point. 14. What percent of a U.S. landfill is made up of food scraps and yard clippings? A) 25%. B) 18%. C) 11%. D) 5%. Show Answer Correct Answer: A) 25%. 15. What is true about Humus? A) Dark and soft. B) Contains much of what plants need for growth. C) The more humus a soil has, the better plants will grow!. D) All the previous. Show Answer Correct Answer: D) All the previous. 16. In soil the air present comes from ..... A) The atmosphere. B) Respiration of soil organisms. C) The atmosphere and from respiration of soil organisms. D) Water. Show Answer Correct Answer: C) The atmosphere and from respiration of soil organisms. 17. Soil formation begins with the weathering of A) Litter. B) Humus. C) Bedrock. D) The A horizon. Show Answer Correct Answer: C) Bedrock. 18. Eolian soils are moved by ..... A) Wind. B) Water. C) Gravity. D) Glaciers. Show Answer Correct Answer: A) Wind. 19. Decaying living things in topsoil makes it? A) Moist. B) Sandy. C) Clay like. D) A dark color. Show Answer Correct Answer: D) A dark color. 20. Which layer is a the layer below soil that is made up of large rock? A) Bedrock. B) Humus. C) Parent Material. D) Topsoil. Show Answer Correct Answer: A) Bedrock. ← PreviousNext →Related QuizzesFundamentals Of Soil Science Quiz 1Fundamentals Of Soil Science Quiz 2Fundamentals 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 10Fundamentals Of Soil Science Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books