which is the last stage of physical weathering in rocks? (1 point)
can someone just answer these small questions please
The last stage of physical weathering in rocks is called "reference-answer-1." To determine this stage, we need to understand the different processes of physical weathering and their respective effects on rocks.
Physical weathering refers to the breakdown of rocks into smaller fragments without changing their chemical composition. It occurs due to various mechanical forces. Here are some common processes of physical weathering:
1. Frost wedging: Water seeps into cracks and joints in rocks, freezes, and expands. This expansion creates pressure, causing the rocks to crack and break apart.
2. Thermal expansion and contraction: Rocks expand and contract as a result of temperature changes. Repeated heating and cooling cycles can lead to the development of fractures in the rocks.
3. Abrasion: The mechanical scraping or grinding of rocks by moving particles, such as water, wind, or glaciers. Over time, this process can wear away the surface of rocks.
4. Root wedging: Plant roots can grow into existing cracks in rocks, exerting pressure and causing them to split apart gradually.
Based on these processes, the last stage of physical weathering in rocks would be when the rocks are broken down into their smallest fragments due to repeated exposure to these forces. This involves the complete disintegration of larger rocks into smaller ones, resulting in loose particles such as gravel, sand, or even finer grains like silt or clay.
It's worth mentioning that physical weathering is often accompanied by chemical weathering processes, which involve the alteration of rock composition through chemical reactions. These two types of weathering often work together to break down rocks and ultimately contribute to the formation of soil.