Soil Weathering Process! Trivia Quiz
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- 1.Soil is a mixture of weathered rock and ____________.
- A.
Water and air
- B.
Decayed organic matter
- C.
Mineral fragments
- D.
All of the above
- 2.The layer of soil that contains the most humus and smaller rock and mineral particles than the other layers is the _____ horizon.
- A.
A
- B.
B
- C.
C
- D.
D
- 3.All of the following are direct causes of mechanical weathering except__________.
- A.
Ice
- B.
Tree roots
- C.
Water
- D.
Oxygen
- 4.Over thousands of years, _________ has chemically weathered limestone, creating caves.
- A.
Caolinite clay
- B.
Carbonic acid
- C.
Oxidation
- D.
Sediment
- 5.Chemical weathering is more rapid in a __________ climate.
- A.
Dry
- B.
Tropical
- C.
Cold
- D.
Moderate
- 6.Mechanical weathering is more rapid in a __________ climate.
- A.
Dry
- B.
Tropical
- C.
Cold
- D.
Moderate
- 7.The organic material in humus includes _______________.
- A.
Plant leaves and stems
- B.
Weathered rocks
- C.
Sand
- D.
Air
- 8.How fast weathering occurs depends on the _____________ of an area.
- A.
Oxygen
- B.
Climate
- C.
Water
- D.
Vegetation
- 9.Compared to the A horizon in a soil profile, the B horizon ________________.
- A.
Is lighter in color
- B.
Contains material leached from the A horizon
- C.
Contains less humus
- D.
All of these
- 10.The difference between mechanical and chemical weathering is _________.
- A.
The length of time each takes to break up rock
- B.
That each occurs in different parts of the world
- C.
Only one changes the chemical composition of a rock
- D.
That only chemical weathering involves water
- 11.Causes of soil erosion include ____________.
- A.
Wind
- B.
Water
- C.
Removal of vegetation
- D.
All of these
- 12.Below the C horizon is ____________.
- A.
Humus
- B.
Clay
- C.
Bedrock
- D.
More soil
- 13.Which is formed by glacial erosion
- A.
Eskers
- B.
Moraines
- C.
Aretes
- D.
Warmer climates
- 14._____________ is the removal of minerals from the A horizon to the other horizons below by dissolving minerals with water.
- A.
Humus
- B.
Litter
- C.
Leaching
- D.
Soil profile
- 15.Which of these is not a cause of soil erosion?
- A.
Running water
- B.
Wind
- C.
Glaciers
- D.
Planting trees
- 16.____________ is the chemical process that occurs when iron is exposed to oxygen in the air.
- A.
Oxidation
- B.
Climate
- C.
Ice wedging
- D.
Weathering
- 17.______ affects soil development because the longer the weathering has occured, the less the soil resembles the parent rock.
- A.
Parent
- B.
Climate
- C.
Soil
- D.
Time
- 18.Small spaces between soil particles may be filled with ______ or ______ .
- A.
Air or water
- B.
Water or sand
- C.
Air or soil
- D.
Soil and sand
- 19.A soil profile is made up of different __________.
- A.
Litter
- B.
Humus
- C.
Layers
- D.
Rocks
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