State the difference between Alluvial soils found in the lower courses and the upper courses of rivers.
Alluvial soil found ill the upper course is coarse in texture, light in colour and less fertile whereas Alluvial soil found in the lower course is fine textured, dark in colour and more fertile.
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
a.Give the six figure grid reference of:
i.the brick kiln
ii. the temple near Asav
‘Rainfall in India is Orographic in nature.’ Give an example with reference to the distribution of rainfall and the effect of relief on its distribution.
Give a reason to explain why :
(i) the coastal areas of India do not experience a significant variation in temperature between summer and winter months.
(ii) the annual rainfall in Rajasthan is less than 25 cm.
(iii) the Coromandel coast gets most of its rain during the winter season.
Study the climatic data given below and answer the questions that follow :
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
De c |
|
Temperature |
24.5 |
25.7 |
27.7 |
20.4 |
30.0 |
32.5 |
31.0 |
30.2 |
29.8 |
28.0 |
25.9 |
24.7 |
|
Rainfall |
4.6 |
1.8 |
1.3 |
1.8 |
3.8 |
4.5 |
8.7 |
11.3 |
11.9 |
30.6 |
35.0 |
13.9 |
(i) Name the driest month.
(ii) Calculate the annual rainfall experienced by the station.
(iii) What is the annual range of temperature ?
Name two states in India where Regur soil is found. In what way does Regur soil help agriculture.
Name two important agents of erosion. For each, state one method of controlling the erosion caused.
