Teaching English through Geography: Parts of a river

 

A river is a ribbon-like body of water that flows from high land downhill. It is a geographical feature. Gravity is what causes a river to flow. A river can be wide and deep, or shallow enough. A flowing body of water that is smaller than a river is called a creek or stream. The largest rivers can be thousands of miles long. 

As the water flows along the river bed the land is worn away, it erodes. Erosion of rivers can form geologic wonders like the Grand Canyon.

All rivers have a starting point where water begins its flow, the source. Water can come from rainfall or snowmelt in mountains, but it can also bubble up from groundwater. The other end of a river is called its mouth, where water empties into a larger body of water, such as a lake or ocean. 

 A tributary is a river or stream that flows into another stream, river, or lake.

The river loses its velocity as it gets lower and deposits different particles or sediments at its mouth. However, rivers still carry important salts and nutrients to support plant and animal life. For this reason, some of the most biodiverse habitats on our planet can be found around rivers.

A river moves more slowly as it nears its mouth, or end. This causes sediment, solid material carried downstream by currents, to fall to the river bottom and form deltas.

A meander is a bend in a river. A stream or river flowing through a wide valley or flat plain can form a meandering stream course as it alternatively erodes and deposits sediments along its course. The result is a snaking pattern.

Humans use rivers for irrigation in agriculture, for drinking water, for transportation, to produce electricity through hydroelectric dams, and for leisure activities like swimming and boating. Each of these uses can affect the health of a river and its surrounding ecosystems. Monitoring the health of rivers, lakes, and streams is important work that is conducted by scientists.

The anatomy of a river