When the hard and soft rocks lie across
... course of the river.
Q.13. Ox-bow lake is formed in the
middle
Q.14. A group of rapids or small waterfalls is called
Q.15. The material forming the flood plains is called
shape of the delta of
river closely resembles this letter.
and
..... countries.
Q.17. The largest delta of the world is in
Q.18.
and ...
cities are situated on estuaries.
Q.19.
........ is the highest waterfall in India.
Q.20. A river in the upper parts of its course where it has great energy to erode is said to
C.
Mention any two sources of river pollution.
ns.
remain slightly higher than the soft rock areas. In such instances the river appears jumper
somewhat raised parts of its bed which are called Arols to
Q.16. A delta is so named due to its triangular shape resembling the Greek letter 'delta' and the tria
Answers
hii friend here are your answers...
Q13.Oxbow lake is usually developed in the middle and lower section of the river; in the flood period oxbow lake becomes the flood overflow area to accept fluvial sediments that are finer than others, and fine sand, silt, and clay cover on top of the originally formed peat or muckle.
Q14.Waterfalls of small height and lesser steepness are called cascades; this term is often applied to a series of small falls along a river. Still gentler reaches of rivers that nonetheless exhibit turbulent flow and white water in response to a local increase in channel gradient are called rapids.
Q17.Ganges Delta
This Envisat image highlights the Ganges Delta, the world's largest delta, in the south Asia area of Bangladesh (visible) and India. The delta plain, about 350-km wide along the Bay of Bengal, is formed by the confluence of the rivers Ganges, the Brahmaputra and Meghna.
ans: Bangladesh
Q15 & Q18 not clear
Q19.Kempty Falls
1,372 m
Q mention any two sources of water pollution.
ans: Agricultural Pollution.
Oil Pollution.
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