Soil Triangle

What is a soil triangle?

• It is a tool used to measure the amount of water in the soil.

• It is a diagram used to identify the different types of rocks in an area.

• It is a method of measuring the fertility of soil.

• It compares the composition of particles to determine soil type.

What are the 12 different soils on the soil triangle?

• Rock, gravel peat, humus, loess, chalk, limestone, shale, marl, sandstone, slate, and granite

• Sand, loamy sand, sandy loam, sandy clay loam, loam, silt loam, silt, silty clay loam, clay, clay loam, sandy clay and silty clay.

• Rock, gravel peat, humus, loess, chalk, limestone,quinoa, and amaranth.

• Wheat, corn, barley, oats, rye, millet, sorghum, rice, buckwheat, triticale, quinoa, and amaranth.

Muck is the combination of

• Organic matter

• Fine inorganic matter

• Fine sand

• Clay

if the plasticity index of the soil sample is 10% indicates the soil is

• Non plastic

• Low plastic

• Medium plastic

• Highly plastic

Which would be classified as "loam"?

• Sand: 40, Silt: 40, Clay: 20
• Sand: 60, Silt: 10, Clay: 30
• Sand: 20, Silt: 50, Clay: 30
• Sand: 50, Silt: 10, Clay: 40

According to World Resources Institute (WRI) in 2019 ,how big size of maiden forests destroyed in every 6 minutes around the world?

• the size of a football field

• Parking area for 1 car

• Tokyo city total land area

• one meter square

How do you use the USDA soil classification triangle?

• Look at the orientation of the percentages on the sides of the triangle.

• Compare the colors of the triangle to determine the soil type.

• Examine the texture of the soil ot determine its classification.

• Observe the shape of the triangle to identify the soil type.

Which element is not the part of Fire triangle ?

• Heat

• H₂O

• Fuel

• Oxygen (oxidization)