According to the CK-12 Foundation, the most common examples of wind erosion are rock formation and desert varnish. Wind erosion can also affect much smaller rocks and structures, as evidenced by the desert pavement in the Mojave Desert.
A:Freeze-thaw weathering, also known as frost weathering, is caused by water working its way deep into cracks in rock faces, expanding as it freezes and then driving deeper into the rock when it melts. Over time, this process can work large chunks of stone loose from rock faces and send the debris tumbling downhill into large scree piles.
A:Urban decay can fragment families, cause loss of jobs, result in depopulation, promote crime, lead to loss of political privileges and contribute to deindustrialization, reports Boundless. Poverty is the main cause of urban decay. A city that falls into urban decay may recover from its social economic challenges or require rebuilding. Changes in government policies on economic activities and failure of communication and transport infrastructure contribute to urban decay.
A:Acid rain cannot possibly be stopped fully but can be reduced in several ways including switching fuel sources to natural gas, oil, or renewable energy sources, removing the sulfur from the coal before burning and burning it more efficiently, using fluidized-bed combustion processes to burn the coal, switching to low-sulfur coal and removing the sulfur from the smoke stack after combustion through the installation of pollution control equipment.
A:Water erosion occurs when moving water carries away bits of rock and dirt. There are four types of water erosion: sheet erosion, rill erosion, gully erosion and bank erosion. All of these depend on the type of land being moved by water. This type of erosion creates valleys, canyons, shorelines and cliffs.
A:There are several ways to prevent erosion, including grassing waterways, conserving tillage, covering crops, managing pastures and fortifying stream and riverbanks. Some erosion control methods, such as fortifying embankments along waterways, take place at the source, while others, such as modifying farming techniques, occur offsite. These techniques help to control and stabilize erosion on short- and long-term bases and are ideally used in combination.
A:Coastal erosion is caused by a number of factors, including natural processes such as the wind, rain and waves, as well as human activities, such as the damming of rivers. Additionally, when barrier islands are destroyed, the coastline becomes more susceptible to the destructive forces of storms and hurricanes. Barrier islands help to absorb some of these destructive forces and protect the coastline.
A:Glacier calving is when large chunks of ice break off the ends of glaciers into the water, becoming icebergs. Glaciers flow slowly, and their motion makes their leading ends unstable and causes calving. The resulting icebergs can be very large, with one observed to be the size of Rhode Island.
A:Sinkholes occur when an underground void collapses, bringing the layers of earth and rock above it down with the collapse. The surface above the sinkhole suddenly drops, plunging anything in the area into a deep hole in the ground. Depending on the nature of the sinkhole, the bottom may be filled with water, and the sides often collapse inward and bury anything or anyone that falls in.
A:Avalanches occur when masses of snow, often with ice and debris, slide down mountain sides. They are triggered by overloading, snow pack conditions, slope angle, vibration and temperature. They gain speed and power as they draw nearer to the bottom of the slope.
A:Cliffs collapse for a number of reasons, one of the most common being the effects of weathering, but there other factors as well, such as water crashing against the cliff face, what the cliff is made out of and the climate of the area. These factors can also work in conjunction to cause a cliff to collapse.
A:Erosion is a natural process in which rocks or soil are moved from one location to another by wind or water. Material may move through erosion for distances ranging from a few feet to thousands of miles. Erosion often is most noticeable along shorelines, but it occurs in a variety of areas throughout the world.
A:Running water causes erosion through friction. Additionally, running water can carry dust, silt or sand particles, which may also work to erode a given surface. Typically, water erodes surfaces in one of four ways.
A:Acid rain contaminates water and soil, killing microbes, insects, fish, and other aquatic wildlife and vegetation. It corrodes stone and metal, and it damages automotive paint. Although contact with acid rain is not directly harmful to people, it can indirectly cause health problems.
A:A rock slide occurs when rocks sit on a sloped plane, and added weight or water causes them to slide down. Heavy rains weigh on the rocks and dirt, and also make the underlying surface slick. Clay or dirt erosion under rocks adds to the potential for a rock slide.
A:Corrosion is a process by which a chemical reaction eats away at a metal. An example of a chemical reaction that causes corrosion is the oxidation of iron by water in an electrolytic process. The product of this reaction is rust.
A:By definition, wind erosion involves the erosion, transportation and deposition of soil by the wind, according to Dictionary.com. Wind erosion is often worse during dust storms. Poor farming practices by humans combined with drought conditions such as occurred during the 1930s in the United States increase wind erosion.
A:Acid rain has many environmental side effects, but its impact is largely seen on water sources and aquatic environment, such as lakes, wetlands and streams, explains National Geographic. Acid rain reduces the alkalinity, the capacity of water to neutralize acid, and thus increases the acidity of the water, leading to a weaker ecosystem. Acidic water is also toxic to fish, clams, crayfish and other aquatic animals.
A:Wild Again states that deforestation can contribute to soil erosion, flooding and droughts. In many countries, there has been a marked increase of flooding in areas that have experienced deforestation.