Soil Texture Determination Experiment

Which of the following is NOT one of the four main components of soil?

• Minerals

• Living organisms

• Air

• Rocks

How are soil particles classified?

• By their color

• By their size

• By their weight

• By their density

What is the purpose of adding detergent powder to the soil samples?

• To increase soil nutrients

• To act as a surfactant

• To change the color of soil

• To enhance soil texture

After mixing the soil samples with water, how long should soil ideally be left undisturbed?

• 1 hour

• 2 hours

• 12 hours

• 24 hours

What does the soil textural triangle help to determine?

• The pH level of soil

• The texture type of soil

• The nutrient content of soil

• The moisture level of soil

Which layer of soil particles settles first after the samples are mixed and allowed to settle?

• Clay particles

• Silt particles

• Sand particles

• Organic matter

What do the results from the soil texture experiment help classify?

• Types of plants

• Soil texture

• Weather patterns

• Water quality

1. The study of soil is called ____.

1. Soil particles are grouped into types according to their ____.

The soil textural triangle is recognized by:

• The International Society of Soil Science
  

• The U.S. Department of Agriculture (USDA)
  

• The United Nations

• The World Health Organization