Soil Review Question Preview (ID: 27542)


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What is organic matter?
a) Once living things that provide nutrients for the soil
b) The distance between soil particles
c) How easily water can move though soil
d) Hard weathered rock

Where most of the animal waste and partially decomposed leaves are found.
a) Horizon O
b) Horizon B
c) Horizon R
d) Horizon A

What is the definition of weathering?
a) Process in which broken rocks are moved
b) Process where ice breaks rock
c) Process where roots break a rock
d) Process in which rocks are broken down

Which type of soil holds water for a long time?
a) Clay
b) Sand
c) Silt
d) Gravel

Which type of soil does NOT hold water?
a) Sand
b) Clay
c) Silt
d) Loam

Dark brown or black color soil often indicates:
a) Considerable moisture
b) Considerable iron oxides
c) A large amount of humus
d) A very young soil

Which is the proper order (from smallest to largest) in terms of particle size?
a) clay, silt, sand, gravel
b) clay, sand, silt, gravel
c) gravel, silt, sand, clay
d) silt, clay, gravel, sand

Which property describes how much space is in between particles and how water moves through soil?
a) Texture
b) Color
c) Pore Space
d) Chemistry

Which type of soil has the smallest particle?
a) Sand
b) Silt
c) Clay
d) Gravel

Which type of soil is best for growing crops?
a) Loam
b) Silt
c) Clay
d) Sand

What is NOT a characteristic of horizon C?
a) Has living organisms
b) Large amounts of rock
c) No or very few living organisms
d) Foundations for buildings are built here

What does Leaching mean?
a) Where worms spread nutirents
b) Where water spreads nutrients to lower horizons
c) Black bugs that tunnel through the soil
d) Organic material found at the surface

What does the term Humus mean?
a) Dark colored, decayed organic matter found in the top layer of soil
b) A dip served at restaurants
c) All of the soil horizons together
d) Where water spreads nutrients

What is NOT a characteristic of horizon A?
a) Has living organisms
b) Also called the subsoil level
c) Also called topsoil level
d) Plant roots are here

What is NOT a characteristic of horizon B?
a) red or yellow in color
b) Has chunks of rock
c) Basements are built in this level
d) All bedrock

What is NOT a characteristic of horizon O?
a) Has NO living organisms
b) Has a large amount of organisms
c) Nutrients are recycled
d) Decayed plants and animals

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