Weathering, Erosion, And Soil Formation Question Preview (ID: 48544)


Weathering, Erosion, And Soil Formation. TEACHERS: click here for quick copy question ID numbers.

What organism is primarily responsible for mixing the humus in the soil?
a) roaches
b) roly poly bugs
c) squirrels
d) earthworms

In which soil layer would you expect to find the most humus?
a) bedrock
b) B horizon
c) A horizon
d) C horizon

What is loam?
a) a type of soil made of mostly sand and air
b) a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
c) a type of soil made of mostly clay
d) a type of soil that is only found in the B horizon

What type of weathering is BEST at weathering marble and limestone?
a) acid rain
b) carbonic acid
c) ice wedging
d) oxidation

Why do farmers leave the weeds and stalks of the previous year's crop in the ground during conservation plowing?
a) They are too lazy to plow it the right way.
b) The dead material prevents birds from stealing the seeds.
c) The dead material prevents water from soaking into the ground.
d) The dead material retains moisture, adds nutrients, and prevents erosion.

Where does humus come from?
a) the organic remains of plants and animals
b) the grocery store
c) nobody really knows
d) Farmers must add it to the soil because it doesn't exist in nature.

Rust forms from the oxidation of what metal?
a) aluminum
b) copper
c) iron
d) silver

Why do farmers use crop rotation?
a) to prevent the formation of litter
b) to prevent the formation of humus
c) to prevent the soil from getting too many organisms
d) to prevent soil exhaustion

What is soil exhaustion?
a) when the soil has too much litter
b) when the soil is too fertile
c) when the soil is no longer fertile
d) when the soil has too much water

What is the name for the top layer of soil?
a) A horizon
b) B horizon
c) C horizon
d) Bedrock

What is the name for the 2nd layer of soil?
a) Bedrock
b) B horizon
c) A horizon
d) C horizon

What is the name for the 3rd layer of soil?
a) B horizon
b) C horizon
c) A horizon
d) bedrock

What is the bottom layer of solid rock beneath the soil called?
a) bedrock
b) A horizon
c) C horizon
d) B horizon

What is another name for the A horizon?
a) subsoil
b) bedrock
c) topsoil
d) midsoil

What is another name for the B horizon?
a) topsoil
b) subsoil
c) midsoil
d) litter

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