Soil Weathering Process! Trivia Quiz
Weathering is a significant part of soil formation, and the soil is crucial to our existence on earth. Soil is a blend of minerals, organic matter, and space. The type of weathering influences soil composition and texture. Soil forms through the buildup and decay of organic matter and the mechanical and chemical weathering process. If you want to know more, take this quiz.
- 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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