The three main causes of landform changes are erosion, deposition and weathering. Some main types of landforms are mountains, plains, plateaus, valleys and deltas. A landform like a mountain experiences gradual change through weather conditions such as rain and wind.Continue Reading
For mountain landforms to change, weathering must first occur. Weathering is a chemical and a physical process in which rocks become smaller in size due to weather and other conditions like frost action. These smaller pieces of rocks can be categorized as sediment types that include silt and sand.
After the weathering process, erosion takes place when these smaller sediment types are moved from one place to another. For example, rocks tumbling down a mountain causes a shift of rock from one area to another. It also causes a mountain to change or become eroded over time.
The erosion process leads to deposition of sediment to other locations to form landforms like a delta or sandbar. A delta forms near a river's mouth.Learn more about Landforms
Two excellent sources for free landform images are Kidzsearch.com and NASA Geomorphology from Space, disc.gsfc.nasa.gov. Both sources include an extensive array of images derived from aerial photography or from space. Copy the images by right-clicking and pasting to your application.Full Answer >
Some of the constructive forces that shape and create landforms are crustal deformation, deposition of sediment and volcanic eruptions. The flow of heat through the Earth's crust and the movement of tectonic plates and magma account for some of the more spectacular crustal deformations. The transportation, or deposition, of sedimentary particles by wind, water and glaciers results in the creation of dunes, deltas and other topographical features.Full Answer >
A piedmont landform results due to changes in stream flow at the base of a mountain or range of mountains. The name comes from the Piedmont district of Italy. In the United States, the term describes the landforms between the Appalachians and the Atlantic coastal plains.Full Answer >
Landforms affect climate by altering the wind and rate of evaporation, which can cause changes in the temperature, humidity and precipitation of a region. When storm fronts run into landforms, such as mountains or high plateaus, rain clouds are sometimes blocked. This causes the upwind side of the landform to receive plentiful rainfall, while the downwind side of the structure remains dry.Full Answer >