Soil and Its Properties Quiz

What are the three major natural resources mentioned in the video?

• Air, Soil, and Fire

• Water, Soil, and Fire

• Air, Fire, and Water

• Air, Water, and Soil

How long can it take to form 1 inch of topsoil?

• 100 to 10,000 years

• 10 to 100 years

• 10,000 to 100,000 years

• 1,000 to 10,000 years

Which layer of soil is primarily composed of organic matter?

• Top layer

• Middle layer

• Bottom layer

• All layers

What are the three major categories of soil properties?

• Chemical, Physical, and Geological

• Physical, Geological, and Biological

• Chemical, Biological, and Geological

• Physical, Chemical, and Biological

What is the pH range of good soil?

• 5.5 to 7.5

• 6.5 to 8.5

• 4.5 to 6.5

• 7.5 to 9.5

What is the primary role of organic matter in soil?

• Increase soil temperature

• Decrease soil pH

• Improve water infiltration and retention

• Increase soil erosion

What is the process called when soil microbes convert organic elements into inorganic forms?

• Decomposition

• Photosynthesis

• Respiration

• Mineralization

Which nutrient is NOT mentioned as being converted by soil microbes?

• Phosphorus

• Calcium

• Sulfur

• Nitrogen

Which organisms form a symbiotic relationship with plant roots to enhance nutrient uptake?

• Bacteria

• Micro rizai

• Algae

• Protozoa

What is essential for proper soil fertility management?

• Adding chemical fertilizers

• Protecting soil and feeding it organic material

• Increasing soil pH

• Reducing soil organisms