Soil Question Preview (ID: 40912)


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Soil scientists study the layers of soil that go together called
a) residual soil.
b) a soil profile.
c) transoprted soil.
d) soil horizons.

Topsoil is dark in color because it
a) contains a lot of worms.
b) is full of dark rocks.
c) has a large amount of organic material.
d) undergoes a lot of chemical weathering.

Rotting or breaking down of plants and animals
a) erosion
b) bedrock
c) decomposition
d) road kill

The more humus a soil contains the more _____ it is.
a) pH
b) colorful
c) gritty
d) fertile

Poor soil management can result in ____________ and nutrient depletion.
a) weathering
b) erosion
c) deposition
d) Black Saturday's

Soil is formed by the breaking up of rocks into tiny pieces, which is called weathering. What are three things that can cause this weathering?
a) Wind, water, heating and cooling of the rock.
b) Weathering, erosion, and deposition.
c) Wind, water, and pH
d) Lightning, heating and cooling of rock, and water.

What are the three main layers in a soil profile?
a) Minerals, humus, and air
b) Topsoil, subsoil, and parent material
c) Loam, sand, and clay
d) Subsoil, clay, bedrock

This type of soil is the best kind for growing most things.
a) Silt
b) Loam
c) Clay
d) Sand

This soil ingredient is made up of decayed plants and animals
a) Air
b) Humus
c) Minerals
d) Water

What is soil erosion?
a) The way that soil is formed.
b) Another name for the greenhouse effect.
c) Another name for soil pollution.
d) A process that moves soil by wind and water.

This type of soil dries out quickly after a rainstorm
a) Clay
b) Loam
c) Sand
d) gravel

In a given soil, the horizon with the highest organic matter content is generally the ___ horizon.
a) A
b) B
c) C
d) O

Soil is made up of what four main ingredients?
a) Tiny pieces of rock, humus, air and sand
b) Humus, or dead plant material, clay, water, and salts
c) Tiny pieces of rock, air, water, and humus or dead plant material
d) Air, water, tiny pieces of rock, and manure

Subsoil is generally equivalent to which soil horizon?
a) A
b) B
c) C
d) O

Which of the following pH values represents a neutral condition?
a) 2.0
b) 5.0
c) 7.0
d) 8.0

Composition, fertility, color, texture, structure, density and pH are all
a) properties of soil.
b) examples of soil.
c) processes of soil.
d) types of soil

A renewable resource is a resource that may be replaced by nature
a) in a relatively short time period.
b) in 1000 years.
c) like coal.
d) or bought at your local GNC.

Chemical and mechanical are two kinds of
a) decomposition.
b) composition.
c) weathering.
d) erosion.

The two most important factors that determine the rate of weathering are
a) the type of rock and minerals.
b) the type of rock and climate.
c) climate and location.
d) erosion and decomposition.

A measure of the ability to allow the movement of fluid through it
a) porosity
b) volume
c) permeability
d) airtight

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