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प्रश्न
Study the extract of Survey of India Map Sheet No. 45D/7 and answer the following questions.
(a) What do you understand by Eastings and Northings?
(b) Give the meaning of each of the following conventional symbols located in the grid square 1622.
(i) 20r (ii) PO
(c) What is the general direction of flow of the Sipu Nadi, given in the map extract? Give one reason to support your answer.
(d) Give the six-figure grid reference of:
(i) The point where the canal leaves the earth work, dam market 10r.
(ii) The spot height 1425 in the South-east corner of the map extract.
(e) Andhra is a better developed settlement than Gulabganj. Give two reasons.
(f) Account for the necessity of ‘fireline’ in the jungle area of the given map extract.
(g)
(i) What main purpose is solved by most of the wells in grid square 1621?
(ii) Why is the water in some of these wells not suitable for drinking?
(h) Name two probable occupations of the people in the settlement of Tokra in squares 2220 and 2221.
(i) What is the total length of canal in metres?
(j) Give the angular distance of the temple in Pithapura in 2022 from Bhumi Margi hill top.
उत्तर
(a) They are grid lines marked in red on the topo maps. The lines running vertically are called Eastings and those running horizontally are called Northings.
(b)
(i) 20r means that the relative depth of water level in the well is 20m.
(ii) PO is the conventional sign for the Post Office.
(c) East to south-west. It is evident from the decreasing value of the spot heights.
(d) (i) 223214 (ii) 236142
(e)
(i) Andhra is connected by a telephone line and Ghlabganj is not.
(ii) Andhra has a Post and Telegraph Office and Dak Bungalow.
(f) Fireline is clearing of 5 m in the forest to control the spread of forest fire. In the hot dry season these forests often suffer from severe problem of forest fire.
(g)
(i) The Brackish well in 1621 has saline water which is used for lime stock and washing purpose.
(ii) Due to large amount of dissolved salts the water is unfit for drinking.
(h) Cultivation and management of the reservoir.
(i) 12.5 cm/2 = 6.25 km.
(j) N140 W.
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Name one offshore oil field of India
What is the compass direction of Dantrai from Jolpur?
Name two natural features in 0325.
Give the six figure grid reference of Triangulated height 217
Why do you find limited cultivation in the map extract? Give two reasons for your answer
Convert the following scales into R.F.
Calculate the average gradient along the two stations A and B, if the horizontal distance between them is 1,200 metres and the vertical difference in height is 240 metres.
What is a Watershed?
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
(a)
(i) Give the four figure grid reference of the settlement of Hamirpura.
(ii) Give the six figure grid reference of the temple in the settlement of Jolpur.
(b)
(i) What does the blue coloured circle in the grid square 0619 represent?
(ii) What is the compass direction of Dantrai from Jolpur?
(c) What is the difference between the:
(i) Pattern of settlements in 0725 and the settlement of Idarla?
(ii) Drainage pattern of the streams in 0624 and those in 0824?
(d)
(i) What is the value of the contour line in square 0226?
(ii) What is the contour interval in the map?
(e) Mention any two factors which provide evidence that the region in the map extract is a rural region.
(f)
(i) How does the feature, indicated by the black curves in 0721, show that rainfall in this region is seasonal?
(ii) Mention one man-made feature in the map which also provides evidence that the rainfall is seasonal.
(g)
(i) Name two natural features in 0527.
(ii) Name two manmade features in 0325.
(h) Name two features which make Dantrai a more important settlement than the other settlements in the map extract.
(i) Calculate the area of the region which lies to the south of northing 21 in square kilometres.
(j) What are the following?
(i) The black vertical line between eastings 09 and 10.
(ii) 302 in grid square 0425.
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.
(b) What is the difference in the pattern of drainage in grid square 0916 and in 0712?
(c) Give the four figure grid reference of each of the following:
(i) Stony waste
(ii) Open scrub.
(d) Calculate the distance in kilometres along the metalled road between the causeways in grid square 0512 and 0808.
(e) (i) What do the tiny curved black lines in grid square 0315 indicate?
(ii) What is the main cause for this feature?
(f) (i) What is the geographical name that you would give to the general pattern of settlements in the region shown on the map?
(ii) Give a reason for your answer.
(g) What is the general direction of flow of the Sipu Nadi, given in the map extract? Give a reason to support your answer.
(h) Name two probable occupations of the people in the settlement of Revdar in grid square 0313 and 0413.
(i) What kind of roads connect (i) Marol with Mitan and (ii) Revdar with Karaunti respectively?
(j) Give two reasons to show that the area depicted in the map experiences seasonal rainfall.
