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Topographic or Ordnance Survey Maps

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CISCE: Class 10

Key Points: Topographic or Ordnance Survey Maps

  • Topographical maps show the detailed surface features of the Earth and are also called topo-sheets or Ordnance Survey maps.
  • The word topography comes from Greek words topos (place) and grapho (to draw).
  • These maps are drawn on separate sheets, each showing a part of an area, which together give a complete picture.
  • In India, topographical (Ordnance) maps are prepared by the Survey of India, Dehradun.
  • Topographical maps show physical features using contours and man-made features using conventional symbols.

Related QuestionsVIEW ALL [74]

Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:

    1. Give the six-figure grid reference for the temple that is located to the southwest of Pithapura settlement.  (1)
    2. Give the four-figure grid reference for a settlement where people of the region meet socially and for trade at least once in year. (1)
    1. What is the pattern of drainage seen in the grid square 2118? (1)
    2. What is the pattern of settlement seen in the grid square 1923? (1)
  1. What do each of the two numbers (281 printed in black colour and 20 printed in red colour) in the grid square 1818 indicate? (2)
    1. Name any two man-made features in grid square 2419. (1)
    2. Name any two natural features in grid square 2118. (1)
  2. What is the significance of the following?
    1. Fire line in grid square 2417. (1)
    2. Water body found in grid square 2221. (1)
  3. Calculate the area of the region between 16 and 19 Eastings and 18 and 22 Northings. Give your answer in square kilometers. (2)
  4. Give a reason for each of the following:
    1. The water in some of the wells in the north-west quarter of the map is not fit for drinking. (1)
    2. The region near Anadra and Gulabgani has many causeways. (1)
    1. What is the main means of irrigation used by people living in the area shown on the map? (1)
    2. What is the main occupation of the people of the region shown on the map? (1)
  5. Which, according to you, is the most important settlement?  Give a reason to support your answer. (2)
  6. Name any two means of transport used by the people living in the area shown on the map extract. (2)

Answer the following questions on the Survey Sheet Number 45 D/10. Eastings 00 to 10; Northings 17 to 28. (Map G)

(a) Give four-figure grid references of the following:
(i) Dhad Talao (ii) Sheet rock in the North-east
(iii) Rock outcrop in the North (iv) Stony waste in the South-east
(v) Open scrub south of Dhad Talao

(b) Give the six-figure grid references of the following:
(i) Police Chowki in village Dantral
(ii) Temple in Bhamra village
(iii) Well with water in settlement Devka
(iv) Spot height 310 near village Jolpur
(v) Tank near Indaria settlement

(c) Give-the direction of the following:
(i) Village Dantral (0324) from Dhann (0723)
(ii) Village Bhamra (0521) from Dhann (0723)
(iii) Village Jolpur (0718) from Malawa (0519)
(iv) Village Warka (0716) from Bikanwas (0316)
(v) Village Rampura (0617) from Dhann (0723)

(d) Give the meanings of the following:
(i) 15r in blue in grid square 0224.
(ii) 300 in brown in grid square 0426.
(iii) Black line in the northernmost part of the map.
(iv) Red line in grid square 0819.
(v) Black dots in grid square 0617.

(e) Give the settlement patterns of the following:
(i) Village Dhann (ii) In grid square 0220

(f) Measure the distances of the following:
(i) Direct distance in km. from Indaria (0826) to Jolpur (0718)
(ii) Indirect distance in km. along the cart track from Dantral (0324) to Dhann (0723)

(g) Give the drainage patterns of the following:
(i) 0827 (ii) In grid square 0226

(h) Name three man-made features found in grid square 0419 and draw their symbols.

(i) Give two evidences that the region gets seasonal rainfall.

(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.

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