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Question
Study the extract of the Survey of India Map Sheet No. 45D/10 and answer the following questions: (Map G)
(a) Give the four-figure grid reference of:
(i) Dadarla (ii) Bhamra
(b) Which is the largest settlement shown on the map extract? Which one communication facility is exclusively available to this settlement?
(c) What does RF stand for? State the RF of the map provided to you.
(d) What is the total area of the actual ground represented in the map extract? (Show with the help of a simple calculation)
(e) What is meant by ‘contour interval’? State the contour interval of the toposheet provided to you
(f) State the highest and the lowest spot heights found on the map extract. Also mention whether they are in metres or in feet.
(g) Give the six-figure grid reference of:
(i) Spot height 339 (ii) Permanent hut located near Dhad Talao.
(h) What, according to you is the main (i) occupation, and (ii) religion of the people of the above area?
(i) Name one ‘natural’ and one ‘man-made’ source of irrigation used in this region.
(j) Name the general mode of transportation used in this region. What special feature of this mode is mentioned in the map extract?
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Solution
(a) The four figure grid reference of: (i) Dadarla -1020 (ii) Bhamra – 0420
(b) Dantrai is the largest settlement shown on the map extract. Post Office (PO) is the one communication facility which is exclusively available to this settlement.
(c) RF stands for Representative Fraction.
RF = `"Distance between two points on the map"/"Distance of the corresponding points on the ground"`
RF of the map is 1:50,000, i.e., 1 unit on the map is equal to 50000 units on the ground.
(d)
Area from North to South = 9.2 cm
Area on Ground will be = `9.2/2 = 4.6` km
Area from East to West on map = 7.3 cm
Area on Ground will be = `7.3/2 = 3.65 "km"`
Total area of the actual ground is
= Area from N to S on ground × Area from E to W on ground
= 4.6 km × 3.65 km = 16.79 sq.km.
(e) Contour interval means the difference between two consecutive contour lines. Contour interval of the given toposheet is 20 metres.
(f) Highest spot height is 339 metres and the lowest is 263 metres.
(g)
(i) Spot height 339 – 042276
(ii) Permanent hut located near Dhad Talao – 077225
(h)
(i) Occupation: The main occupation of the people of this area is agriculture. Yellow colour over the map stands for agricultural land. White patches on the map shows the uncultivated land.
(ii) Religion: The symbol of temple all over the map proves that mostly people belongs to Hindus religion.
(i) Natural source of irrigation is Sukli Nadi. The solid blue circle and hollow blue circle indicates the presence of lined and unlined perennial well as the man-made source of irrigation.
(j) The general mode of transportation is bullock or horse cart. A single red line shown on the map indicates the cart-track. It is a path broader than a pack track, made by bullock or horse cart.
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(f) Measure the distances of the following:
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(g) Give the drainage patterns of the following:
(i) 0827 (ii) In grid square 0226
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(j) Explain the nature of the river.
(k) Explain the relief of the area.
(l) What is the general slope of the land? Give reason for your answer.
(m) What is the main occupation of the people? Give reason for your answer.
(n) What is the mode of irrigation? Give reasons for your answer.
(o) What is the mode of transport? Give reasons for your answer.
Study the extract of the Survey of India Map Sheet No. 45D/7 and answer the following questions:
(a) Give the six-figure grid reference of:
(i) ∆ 225 (ii) A lined well near Ganguwada.
(b) Name the most important perennial source of irrigation shown on the map extract.
(c) (i) What does 3r in the grid square 8895 mean?
(ii) What do you mean by 20r in the grid square 8994?
(d) Give two points in evidence to show that the region in the map extract has seasonal rainfall.
(e) (i) What does the blue line in the Varkanala indicate?
(ii) What is the general direction of the Varkanala?
f) (i) What is the meaning of 1 : 50000 printed below the map extract?
(ii) Calculate the distance in km., along the cart track between Jegal in the grid square 8590 and Odhava in the grid square 8892.
(g) Which part of the map is more developed in agricultural occupation? Give a reason for your answer.
(h) Give the four-figure grid reference of confluence of Sipu river and Varkanala.
(i) Name two types of vegetation in the given map extract.
(j) What is the pattern of drainage in the grid square 8599?
(k) (i) How many types of tracks are shown in the map extract? Name them.
(ii) What is the common mode of transportation in the southern part of this map?
(l) What is the general pattern of settlement? Why?
If you are interpreting the cultural features from a topographical sheet, what information would you like to seek and how would you derive this information? Discuss with the help of suitable examples.
