Hello class, today we will be learning about 9 types of landforms
The first type is a v-shaped valley. these are found in the upper course and are a feature of both lateral and vertical erosion.They are formed when the water flowing on the valley carries rocks and stones, eroding it and creating the valley. The next land form we are learning about is an interlocking spur. They are features of erosion, which means it wares away as the water moves. they are found in the upper course.
The next 2 we are covering is a Gorge and a waterfall, these are both found in the upper course. Water falls are first made when through hydraulic action and erosion, rock at the foot of the waterfall which is softer wares away, creating a plunge pool. over time, the softer rock erodes back to create an overhang. Eventually, the overhang is too heavy and falls, forcing the waterfall to fall back. This is how a gorge is formed.
Hello class, welcome back, today we will be finishing off land forms, starting with ox-bow lakes and meanders. Ox-bow lakes form when a meander is cut off, forming a body of water, blocked from the river by layers of sediment. in a few years, reeds and plants will grow in the lake, eventually covering the lake and becoming land. They are often found in the lower course of the river. A meander is a river with lots of bends, curves and straights. they are made by river water moving side to side as it flows across its floodplain.
The next 2 land forms we are learning about are Levees and Floodplains. A levee is an embankment built to prevent the rivers overflow. They are made from deposition of sediment and can be either man-made or natural, both levees and floodplains can be found in the lower course of a river. Flood plains are areas o land adjacent to the river, they are formed when a meander flows sideways as it travels downstream
The final landform we're learning about is an estuary. These can be found in the lower course of the river and are where the river meets the sea. initially, estuaries were formed by rising sea levels, once formed they become traps for sediment