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Question

Give the meanings of the following terms :
a. Oxbow lakes
b. Meanders
c. Cirques
d. Moraines
e. Tarn
f. Mesa
g. Levee

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Solution

a. Oxbow Lakes- An oxbow lake starts out as a curve, or meander, in a river. A lake forms as the river finds a different, shorter, course. An oxbow lake is a u-shaped water body.

b. Meander- A meander is a bend in a river channel. Meanders form when water in the river erodes the banks on the outside of the channel. The water deposits sediment on the inside of the channel.

c. Cirque - Cirque is a bowl shaped depression located where the glacier begins to form.

d. Moraines- The rock material deposited alongside the valley due to the melting of glaciers is known as moraine or glacial moraine. It is composed of debris varying in size, ranging from fine silt to large stones or boulders.

e. Tarn - A tarn is a mountain lake or pool, formed like an amphitheater valley by glacial erosion. It is formed when either rain or river water fills the valley.

f. .Mesa - Mesa is an isolated flat-topped hill with steep sides, found in landscapes with horizontal strata.

g. Levee - The raised banks of a river is known as levees.


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