Soil Quiz

What are the three main types of soil?

• water, air, organic matter

• loam, peat, humus

• gravel, rock, shale

• sand, silt, clay

How is soil formed?

• Soil is formed through the process of sedimentation.

• Soil is formed through the process of weathering.

• Soil is formed through the process of erosion.

• Soil is formed through volcanic eruptions.

What is weathering and how does it contribute to soil formation?

• Weathering is the process of melting rocks and minerals to form soil.

• Weathering is the process of breaking down rocks, minerals, and organic materials on the Earth's surface. It contributes to soil formation by gradually breaking down rocks into smaller particles, which then mix with organic matter and minerals to form soil.

• Weathering is the process of compressing rocks and minerals to form soil.

• Weathering is the process of evaporating rocks and minerals to form soil.

What are the four main components of soil?

• rocks, plants, insects, and bacteria

• sand, silt, clay, and gravel

• sunlight, temperature, wind, and precipitation

• minerals, organic matter, water, and air

What is the role of organic matter in soil?

• Organic matter has no role in soil.

• Organic matter decreases soil fertility.

• Organic matter improves soil structure, water retention, nutrient cycling, and supports soil organisms.

• Organic matter increases soil erosion.

What is the pH range for most plants to grow well in soil?

• 3 to 4

• 8 to 9

• 10 to 11

• 6 to 7

How can soil erosion be prevented?

• Implementing conservation practices

• Increasing deforestation

• Clearing all vegetation

• Using heavy machinery

A mixture of rock and minerals particles, decayed organic material, air, and water is called ______. 

• clay
• soil
• sand
• humus

The breakdown of rock into smaller pieces of the same material without any change in its composition is  

• Chemical weathering
• Physical weathering 
• Soil
• None of the above

Decayed organic material in soil is called 

• Loam
• Soil
• Humus
• Sand