Importance of Soil
True or false, soil is a living, naturally occurring dynamic at the interface of air and rock.
True
A solid rock layer underneath the soil typically found in Horizon D is known as what?
Bedrock
What is the actual color of soil called?
Hue
We used butterscotch pudding to represent Horizon B in our soil horizons lab. Why?
Butterscotch represented the clay found in that layer.
List 2 careers you could have that relate to soil.
Farm Manager
Fertilizer Technician
Soil Scientist
Government agent
Private consultant
Extension agent
Plant and animal residues at various stages of decomposition are referred to as ______________.
Organic Matter
Which soil type has the smallest particle size?
Clay
______ color system is used to identify color of soil.
Munsell
A layer of soil that is parallel to the earth's surface is called a __________.
Horizon
How many acres are in 1 section?
640
Microscopic plants or animals that are beneficial in decomposing plant and animal tissue are referred to as ______________.
Microorganisms
Which of the following improves soil structure?
a. Continuous cultivation
b. Adding organic matter
c. Cultivating when wet
d. Compaction
B.
Splotches of colored soil in a matrix of different colors are called ______.
Mottles
Organic geologic material from which horizons are formed are called ________.
Parent material
A pH of ____ is neutral.
7
Loss of valuable topsoil to wind and water is caused by ___________.
Erosion
Which of the following describes the soil's ability to hold nutrients that are cations in the soil?
a. Acidic soil
b. Cation Exchange Capacity
c. Anions
d. Soil pH
B
What 2 things are usually found in pore space?
Air and water
Which letter represents the horizon containing topsoil?
A
Basic soils range from 7-__?
14
What living organism is the best known conditioner of the soil?
Earthworms
Removal of soluble minerals from the soil by movement of water through the soil over long periods of time is ___________.
Leaching
An aggregate is known as a ____ unit of soil structure.
a. Inherited
b. Triple
c. Single
d. hard
Single
Any particle smaller than 2mm in diameter is referred to as _____________.
Fine earth
How many feet are in an acre?