Which of the following best describes chemical weathering?
Chemical weathering is an event when rocks are broken down because of the chemical things which alter it. Thus, the best description of chemical weathering is: it’s the process by which rocks and minerals undergo changes in their composition.
Does ice cause chemical weathering?
Ice is one agent of mechanical weathering. Cycles of freezing and thawing can cause ice wedging, which can break rock into pieces.
What causes mechanical weathering?
Mechanical weathering is usually caused by extreme hot and cold temperatures. Water seeps into cracks in rocks, freezes, and expands, causing further breakdown of rocks. Wind is another example of mechanical weathering.
What are the two most common causes of chemical weathering?
Causes Of Chemical Weathering
- Water- This is the most important cause of chemical weathering.
- Oxygen- This is also an important cause of chemical weathering.
- Carbon Dioxide- This dissolves in rainwater, the result a weak acid called carbonic acid, this outcome easily weathers marble and limestone.
What are three causes of mechanical weathering and two causes of chemical weathering?
The causes of mechanical weathering include freezing and thawing, release of pressure, plant growth, actions of animals, and abrasion. The causes of chemical weathering include the action of water, oxyen, carbon dioxide, living organisms, and acid rain.
What are some similarities and differences between physical and chemical weathering?
Physical Weathering occurs to temperature or pressure. Physical Weathering involves rocks breaking through contact with atmospheric conditions, but Chemical Weathering breaks down rocks with the effect of certain chemicals.
What are 4 factors that affect the rate of weathering?
What Factors Determine the Rate of Weathering?
- Mineral Composition. One type of weathering, known as chemical weathering, works at different rates depending on the chemical composition of affected rocks.
- Type of Lattice.
- Water and Salt.