lijit search

Rivers and their changing paths

Posted by Chris Shrestha

Rivers and their changing paths

Rivers are formed either from underground springs, mountains ice which melts with the change of seasons or from water flowing out of large lakes. Rivers play a major role in shaping the Earth's surface, either by eroding mountains or by depositing rockes and soil in new areas. As rivers flow, water erodes in the banks and washes away the soil or rock. Over a period of time the currents begin to form bends in the river's pathe, as shown in the diagram. These bends are called 'Meanders'. River currents move the water towards the outer sides of these meanders, as a result of this the gradual twists and turns of the river become sharp bends. The river continues to cut into the soil on the outer bend and deposits the sediments on the inner bends and deposits the sediments on the inner bends thus changing its shape. Gradually the rivver cuts into one of the bends and isolates or abandons a patch of water, in the shape of crescent, and by depositing soil in front of it, forms an 'Oxbow lake'.

0 comments

Post a Comment

bookmark
bookmark
bookmark
bookmark
bookmark

Video

Loading...

Counters

Ads

globe


counter
There was an error in this gadget

Followers

There was an error in this gadget

Google search box