how does change in the state of water erode/weather roads and mountains?

Answer 1

Water erosion occurs due to the movement of water across the land surface, which results in the removal of soil, rock, and other sediments. The state or form of water, whether it is a solid, liquid or gas, influences the extent and rate of erosion/weathering.

Melting snow and ice can cause erosion by the formation of streams and rivers, which transport sediments downslope. This is particularly true in mountainous areas where glaciers melt, causing landslides and rockfalls. The presence of liquid water also increases the potential for chemical weathering, as water reacts with minerals in rocks and soils.

Heavy rainfall is another factor that contributes to erosion. When rainwater falls on the surface of roads and mountains, it can flow downhill and create gullies, rills, and channels. Over time, this can lead to the formation of large potholes, washouts, and landslides, making roads unsafe.

In areas with freezing temperatures, the expansion of water when it freezes can exert mechanical force and cause cracks and fractures in rocks, leading to the breakdown of the rock structure. When the ice melts, further erosion can occur due to the movement of water in the cracks created by freeze-thaw cycles.

Overall, changes in the state of water can significantly impact the process of erosion and weathering, leading to changes in the landscape and affecting the safety and durability of infrastructure like roads and mountains.