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WorksheetsDefinition of Weathering
Total questions: 15
Worksheet time: 8mins
Which of the following is NOT a category of weathering?
Mechanical weathering
Chemical weathering
Biological weathering
Thermal weathering
What is Chemical weathering?
Caused by wind, sand, rain, freezing, thawing, and other natural forces
Occurs when rocks undergo chemical reactions to form new minerals
Caused by the actions of plants and animals
Fill in the blank: Biological weathering is caused by the actions of _______ as they grow, nest, and burrow.
plants and animals
wind and water
sunlight and temperature
rocks and minerals
What is physical weathering?
A) The chemical breakdown of rocks
B) The mechanical breakdown of rocks into smaller fragments without a change in chemical composition
C) The addition of chemical elements to rocks
D) The subtraction of chemical elements from rocks
Fill in the blank: Physical weathering involves breaking the rock into sub-domains, large mass to smaller material without changes to the ______ properties of the rock.
mineral
chemical
biological
structural
What is another physical force that contributes to mechanical weathering?
Gravity
Magnetism
Friction
Nuclear force
The growth of salt affects rocks physically by causing:
Erosion
Expansion and cracking
Color change
Melting
Which of the following is a process of chemical weathering?
Hydration
Combustion
Fermentation
Condensation
Explain the process of hydrolysis using feldspar as an example.
Hydrolysis of feldspar involves the reaction with water, leading to the formation of clay minerals and soluble ions.
Hydrolysis of feldspar involves the reaction with oxygen, leading to the formation of rust.
Hydrolysis of feldspar involves the reaction with carbon dioxide, leading to the formation of carbonates.
Hydrolysis of feldspar involves the reaction with nitrogen, leading to the formation of nitrates.
What happens when water comes in contact with granite?
The granite dissolves completely
The granite remains unchanged
The granite becomes softer
The granite changes color
CO2 + H2O reacts to form what acid?
carbonic acid
sulfuric acid
acetic acid
hydrochloric acid
Which minerals are the most important in dissolution?
A) Calcite and dolomite
B) Gypsum and rock salt
C) Limestone and carbon dioxide
Limestone dissolves due to its reaction with percolating water which contains dissolved ______.
carbon dioxide.
oxygen.
nitrogen.
hydrogen.
Burrowing animals play a role in the mechanical mixing of soil and loose rock particles by:
a) compacting the soil layers
b) creating tunnels and burrows
c) adding organic matter to the soil
d) preventing soil erosion
Which type of rocks are resistant to mechanical weathering but more susceptible to chemical weathering?
Igneous rocks
Sedimentary rocks
Metamorphic rocks
Volcanic rocks
