Physical Characteristics of Soil

What is the ideal composition of soil?

• Mineral Matter 50%, Water 20%, Air 20%, Organic Matter 10%

• Mineral Matter 45%, Water 25%, Air 25%, Organic Matter 5%

• Mineral Matter 45%, Water 25%, Air 20%, Organic Matter 10%

• Mineral Matter 50%, Water 25 %, Air 20%, Organic Matter 5%

Water which is absorbed onto the surface of soil particles is called:

• Hygrocopic

• Soil Water

• Capillary Water

• Gravitational water

Which of the following statements is true:

• Soil Air has the same amount of Carbon Dioxide as Atmospheric Air

• Soil Air has more Carbon Dioxide than Atmospheric Air

• Soil Air has less Carbon Dioxide than Atmospheric Air

What soil component is found at A?

• Clay

• Sand

• Organic Matter

• Silt

What component of soil is found at B?

• Sand

• Silt

• Organic Matter

• Clay

An ideal soil for cultivation contains:

• 33% Sand, 33% Silt, 33% Clay

• 40% Sand, 40% Silt, 20% Clay

• 50% Sand, 30% Silt, 20% Clay

• 20% Sand, 40%% Silt, 40% Clay

Name the soil component labelled B.

• Mineral Matter

• Organic Matter

• Water

• Air

A measure of the proportion of sand, silt and clay found in a soil is known as

• Soil Structure

• Soil texture

• Soil Triangle

• Topography

Good Drainage, Good Aeration, Large Pore Space and poor fertility are characteristics of which soil type?

• Clay

• Sandy

• Loam

• Silt

Poor Drainage, Poor Aeration, Prone to Water logging , Small Pore Space and Fertile

• Clay

• Loam

• Sandy