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Questions and Answers
What is physical or mechanical weathering?
What is physical or mechanical weathering?
- A process that only changes the shape of rocks without altering their size
- A process that changes the chemical composition of rocks
- A process that breaks rocks down into bits due to physical force without changing their chemical composition (correct)
- A process that involves the melting of rocks
Which process of physical weathering is most prevalent in mountainous regions with a daily freeze-thaw cycle?
Which process of physical weathering is most prevalent in mountainous regions with a daily freeze-thaw cycle?
- Chemical Weathering
- Unloading (release of pressure)
- Thermal Expansion
- Frost Wedging (correct)
What happens to rocks during the process of unloading (release of pressure)?
What happens to rocks during the process of unloading (release of pressure)?
- Rocks remain unchanged
- Rocks are melted
- Rocks change their chemical composition
- Rocks expand and become brittle and fractured (correct)
What causes rocks to expand and become fractured in the process of thermal expansion?
What causes rocks to expand and become fractured in the process of thermal expansion?
Why do rocks change in both shape and size during physical weathering?
Why do rocks change in both shape and size during physical weathering?
What is the result of frost wedging in the process of physical weathering?
What is the result of frost wedging in the process of physical weathering?
What is the primary cause of the breakdown of rocks in abrasion?
What is the primary cause of the breakdown of rocks in abrasion?
Which of the following salts is NOT mentioned as having a tendency to expand in salt weathering?
Which of the following salts is NOT mentioned as having a tendency to expand in salt weathering?
What is the process where a solid dissolves into a solvent forming a solution?
What is the process where a solid dissolves into a solvent forming a solution?
What occurs when carbon dioxide dissolves in water forming carbonic acid that can cause rocks to dissolve?
What occurs when carbon dioxide dissolves in water forming carbonic acid that can cause rocks to dissolve?
Which type of weathering results from plant, animal, and microbial influences?
Which type of weathering results from plant, animal, and microbial influences?
In which type of weathering do rocks decompose due to the response of oxygen with minerals?
In which type of weathering do rocks decompose due to the response of oxygen with minerals?
Which process occurs when water becomes integrated into the minerals causing the mineral crystals to change in structure and soften?
Which process occurs when water becomes integrated into the minerals causing the mineral crystals to change in structure and soften?
What is responsible for many rocks having a rusty red color?
What is responsible for many rocks having a rusty red color?
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