RAPHY
1 VISU
iii) ridge
iv) plateau
0.01 Multiple choice questions:-
(10)
a) The iong narrow top of a mountain is called a:-
1) peak
11) range
b) As glaciers cut their way through mountains, they form
1) A-shaped valleys
ii) U-shaped valleys
c) A plateau surrounded by mountains is called:
1) An intermontane plateau. ii) A mountain plateau
d) Rivers carry a heavy load of finely eroded material called:
i) alluvium
ii) deposits
iii) O- shaped valleys
iv) V-shaped valleys.
iii) A continental plateau
iv) A volcanic plateau
iii) graben
iv) loess.
cam toasophy ,
0.02. Fill in the blanks :-
(10)
a) The science of map-making is called
b) There are calledramain intermediate directional points.
c) Maps showing the distribution of crops, minerals and climatic zones are examples of the matie
maps.
d) The
of a map explains what the symbols and signs used in the map mean.
e) Asketch is a rough drawing based on observation and is not drawn to scale.
or
Q.03. State TRUE or FALSE :-
(10)
a) Land masses cover 71% of the earth's surface.
b) Aggradation and degradation are exogenous forces.
c) A plateau is a highland with a pointed top.
d) Rivers carry a heavy load of finely eroded material called alluvium.
e) Rift valleys are formed due to tectonic forces.
0.04. Answer in detail:- (5 x 10 = 50)
a) How are Block Mountains formed? Distinguish between Block Mountains and fold mountains.
b) What are oceans? How are they different from seas?
c) What is agriculture? Explain the importance of agriculture.
d) Why do we need models and tools to study the Earth?
e) What are valleys? Write a briei note on the key features of the different kinds of valleys
Answers
Answer:
A valley is an elongated low area often running between hills or mountains, which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period of time. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountain or polar areas. At lower latitudes and altitudes, these glacially formed valleys may have been created or enlarged during ice ages but now are ice-free and occupied by streams or rivers. In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valley are described by geographers, using terms that may be global in use or else applied only locally.
Calchaquí Valleys in Argentina
U-shaped valley in Glacier National Park, Montana, United States
Romsdalen in Western Norway has almost vertical walls.
Fljótsdalur in East Iceland, a rather flat valley
The Frades Valley in the mountainous region of Rio de Janeiro state, Brazil
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