A rock with a crack in it that has filled with water, frozen, thawed and then refrozen until it has broken is one example of frost wedging. Water expands when frozen.Continue Reading
Most rocks and stone formations are riddled with tiny cracks, fissures and holes naturally. Rainfall trickles into these natural openings. If the water does not evaporate, it sits in the opening and when the temperature drops low enough, the water freezes and as it freezes, the particles expand, pushing the crack or fissure open wider. Over time, the process is repeated until the rock breaks apart. Frost wedging is an example of physical weathering, and it is usually a slow process that can speed up in more extreme climates.
The process of water expanding as it freezes can be seen with simple ice cube trays. Fill the ice cube trays with water and put them in the freezer making sure to mark where the water line is. Once they are frozen, remove them, and note that the water has expanded over the original line.
Other types of physical weathering include erosion, oxidation and thermal expansion. The process of frost wedging has nothing to do with cooking, frosting cakes, baking or food.Learn more about Landforms
Mechanical weathering may occur due to thermal fractioning, frost wedging, hydration shattering, exfoliation and abrasion. During mechanical weathering, external forces cause solid rock material to break into smaller sediments.Full Answer >
Frost wedging is a type of mechanical weathering caused by frost and ice. Water expands when it freezes, and repeated cycles of freezing and thawing slowly weaken the structural integrity of porous and cracked rocks. Over time, frost wedging enlarges tiny cracks into huge fissures. The fissures eventually split the rock completely.Full Answer >
One example of the mountains and basins landforms found in the United States is located in central Idaho. The landscape of the region is formed by a combination of broad basins, uplands and breaklands. The elevation found in the central Idaho mountains and basins ranges between 1,600 and 8,200 feet.Full Answer >
An example of a raised flat area is a plateau. A plateau is a large flat region of land higher than the other areas of land surrounding it.Full Answer >