Landforms are formed by movements of the earth, such as earthquakes, weathering, erosions and deposits. Many landforms are created by more than one of these processes. These are called polygenetic landforms.Continue Reading
Structural landforms are created through plate tectonics. When the earth shifts, landforms such as fold mountains, volcanoes and rift valleys can occur. Volcanoes are an example of a landform that can go on to produce other landforms, such as craters, calderas and lava domes.
Landforms can also occur through the process of weathering, which is the process by which sediments and rocks are broken down into soil or grains such as sand. Limestone landforms and periglacial landforms are two examples of weathering landforms.
Erosional landforms such as river valleys and coastal cliffs are formed when forces such as wind and water wear away surfaces. Erosion often takes a significant amount of time, but its effects are easily measured by examining geological evidence such as rock layers.
Depositional landforms are formed when minerals and other substances are deposited over time. In some cases, these landforms become sedimentary rocks after the deposits are altered by forces such as chemicals, heat and pressure. Examples of depositional landforms include deltas, flood plains and beaches.Learn more about Landforms
Landforms are divided into 11 major categories: Aeolian, coastal and oceanic, erosion, fluvial, impact, karst, lacustrine, mountain and glacial, slope, tectonic and volcanic. Within these groupings are many landform subtypes.Full Answer >
Geologists consider the four major landforms to be hills, mountains, plains and plateaus. Other minor categories of landforms include, but are not limited to, canyons, valleys, buttes, basins, bays and peninsulas.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 >
The major landforms in the northeast of North America are the Atlantic coastal plains, Appalachian Mountains, the Adirondack Mountains and natural communities. Each is characterized by distinct geological features and the natural plant and animal species that live in each region.Full Answer >