what are the causes and effects of weathering of rock and classify them into physical and chemicles change and reversible and irreversible. fast please I need for homework
Answers
Answer:
The effects of weathering disintegrate and alter mineral and rocks near or at the earth’s surface. This shapes the earth's surface through such processes as wind and rain erosion or cracks caused by freezing and thawing. Each process has a distinct effect on rocks and minerals. The three forms of weathering include mechanical, biological and chemical.
Explanation:
Mechanical weathering physically breaks down rocks because of environmental factors that include heat, cold, water and wind. One form of mechanical weathering is thawing or constant freezing of water. Water, in liquid form, penetrates the many fissures, joints and holes within a rock. It starts freezing as temperatures drop to 32 degrees Fahrenheit and below. As the water freezes, it expands and becomes about 10 percent larger. This expansion pushes the cracks and holes in rocks outward. Even the hardest rocks such as granite, cannot match the extremely strong force. Salt wedging is the other form of mechanical weathering. Water that enters the cracks and holes on the rock surface contains salt. As it evaporates, it leaves the salt behind. With time, the salt deposits build up. They create a strong pressure that causes rocks to weaken and break. Mechanical weathering is highly common in cold climates.
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