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WorksheetsQ2 MODULE 1 - Weathering
Total questions: 15
Worksheet time: 8mins
Which of the following best describes weathering?
The process by which rocks are exposed to severe weather
The process by which rocks are chemically strengthened due to exposure to heat and pressure
The process by which rocks are formed by heat and pressure
The mechanical or chemical process by which rocks are broken down
How does gravity contribute to weathering?
By abrasion of the rocks
By expansion of rocks
By dissolving rocks’ particles
By creating holes in rocks
Which of the following is NOT an example of physical weathering?
Freeze-thaw
Abrasion due to the movement of glaciers
Wind blowing sand onto a rock
Plant that grows on the cracks of the rocks
What happens to pieces of rock as they are transported by a river?
They get smaller and rounder
Much larger and rounder
Smaller and more jagged
Gets larger and more jagged
In hydration, water is an active agent of chemical weathering. What happens when water loosely combines with the minerals of the rock?
Transports the rock into a lower altitude
Weakens the molecular binding of the minerals
Converts the mineral into another kind
Cements them together
What are the two things that affect the rate of weathering?
Size of rock and time of the year
Time and date
Rain and ice
Type of rock and climate
Which of the following best describes chemical weathering?
The process by which rocks are broken down by anthropogenic activities
The process by which rocks are broken down by physical forces
All of the above
The process by which rocks are broken down by chemical means
Weak organic acids are produced by the action of the growing roots of lichens. These acids react with some minerals in rocks resulting in the decomposition of rocks. How will you classify this process?
Chemical weathering
Physical weathering
Biological weathering through physical means
Biological weathering through chemical compounds
Which of the following conditions promotes slow chemical weathering?
Fracturing
High amount of rainfall
Thick soil
Cold temperature
Which type of rocks tends to weather more rapidly through hydrolysis process?
Rocks that are impermeable
Rocks that contain quartz
Rocks that contain iron
Rocks that contain feldspar
Which of these statements is NOT true about mechanical weathering?
breaks rock material into smaller pieces
changes the chemical composition of rocks
strong winds carrying sand blows on the rocks
beach rock gets hot in daytime and cools in the evening thus creating fracture on the rock
Which is an example of oxidation?
Rust decomposes rocks completely with passage of time.
Some of the minerals get dissolved in water.
The joints enlarge in size and lime is removed in the solution.
Due to the absorption of water by rocks, its volume increases.
Which of the following activities has resulted in an increased rate of chemical weathering through acidification?
I.The production of SO2 and NO in the atmosphere that combine with rain to form acids.
II.The release of too much carbon dioxide in the air that turn rain into weak acid.
III.The disintegration of rocks during construction and mining
IV.The growth of the plant roots on the rock crack.
1 only
2 only
1 and 2
2 and 3
Which is NOT included in the group?
carbonation
abrasion
acidification
hydration
In which of the following climates will chemical weathering be most rapid?
cold and dry
hot and dry
cold and humid
hot and humid
