Characteristics of a river Characteristics Upper course River channel The river has a very narrow channel and a shallow one too. Force/strength and speed of the water The water is slow, as there is low force is it Amount of water There is little water as it only comes from the source of the river.
Rivers flow downhill, not necessarily south. Gravity is the ultimate determining force in terms of water flow. Water will flow downhill from the highest point to the lowest point using the path of least resistance.
Weathering is a process in which rocks get disintegrated into smaller particles or get decomposed at or near the surface of the Earth. For example, biological weathering. Denudation is a long term process in which the wearing and tearing of the surface of the Earth takes place.
The action of running water which include streams, rivers, and rainfall, have constantly shape the surface of the surface of earth through erosion and depositional processes. River (or running water) is one of the most active agent of land form development.
The movement of the atmosphere in a direction parallel to the earth surface is wind. Geological work of wind. The earth is surrounded by an envelop of gases called the atmosphere. The movement of the atmosphere in a direction parallel to the earth surface is wind.
During the day, air above the land heats up faster than air over water. Warm air over land expands and rises, and heavier, cooler air rushes in to take its place, creating wind. At night, the winds are reversed because air cools more rapidly over land than it does over water.
In deserts, wind abrasion shapes the rocks and boulders. In areas where strong winds consistently pick up sand and carry it, rocks and boulders in the wind’s path can be impacted by wind abrasion. If the wind blows over low-lying rocks, it will cause them to become flattened on the upwind side.
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Upper course river features include steep-sided V-shaped valleys, interlocking spurs, rapids, waterfalls and gorges. Middle course river features include wider, shallower valleys, meanders, and oxbow lakes. Lower course river features include wide flat-bottomed valleys, floodplains and deltas.
In the upper course, the main work of the river is erosion.
