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प्रश्न
(i) On a topographical map two stations A and B are situated at height of 500 metres and 100 metres respectively. If the horizontal distance between them is 2 km, calculate the gradient.
(ii) On a topographical map, two places A and B are given. Calculate the gradient between them.
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उत्तर
(i) Horizontal distance = 2 km = 2000 m
Vertical difference in height = 500 – 100 = 400 metres
Gradient =`"Vertical interval"/"Horizontal equivalent"`
`= 400/2000`
`= 1/5 = 1 : 5`
(ii) Horizontal distance: Measure the distance in cms. between the two places with your ruler. Then from the R.F. given on the toposheet calculate the actual distance between the two places in km and then convert into metres.
Vertical interval in height: Find the difference between the values of the two contours in which the places lie or if no contour lines are shown, find the difference in the spot heights of the two places.
Gradient = `"Vertical Interval"/"Horizontal Equivalent" "Express your answer as a ratio"`
संबंधित प्रश्न
What are the following?
The black vertical line between eastings 09 and 10
What are the following?
302 in grid square 0425
Mention a special feature associated with the streams in grid square 9879.
Name the types of drainage pattern found in grid square 9374.
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
-
- Give the six-figure grid reference for the temple that is located to the southwest of Pithapura settlement. (1)
- 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)
-
- What is the pattern of drainage seen in the grid square 2118? (1)
- What is the pattern of settlement seen in the grid square 1923? (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)
-
- Name any two man-made features in grid square 2419. (1)
- Name any two natural features in grid square 2118. (1)
- What is the significance of the following?
- Fire line in grid square 2417. (1)
- Water body found in grid square 2221. (1)
- Calculate the area of the region between 16 and 19 Eastings and 18 and 22 Northings. Give your answer in square kilometers. (2)
- Give a reason for each of the following:
- The water in some of the wells in the north-west quarter of the map is not fit for drinking. (1)
- The region near Anadra and Gulabgani has many causeways. (1)
-
- What is the main means of irrigation used by people living in the area shown on the map? (1)
- What is the main occupation of the people of the region shown on the map? (1)
- Which, according to you, is the most important settlement? Give a reason to support your answer. (2)
- Name any two means of transport used by the people living in the area shown on the map extract. (2)
What do you understand by the term Grid?
What do you mean by ‘Marginal Information’?
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
(a) Name and give the four figure grid reference of a settlement where the people of the region meet at least once a year.
(b) What does the conventional symbol at grid reference 145132 mean?
(c)
If a man were to walk from Gulabganj (1820) to Harmatiya (1916):
(i) In which direction would he be walking?
(ii) Which are the two different kinds of roads that he would be using?
(d)
What do the following numbers in grid square 1718 and 1818 mean?
(i) 280 (ii) 281
(e) What are the two differences between the settlement Bamba in 1914 and those in 1813?
(f) Name four facilities that Anadra has which makes it an important settlement
(g) What is the quickest means of communication for the people of Dabani (1313)?
(h) What do the following mean:
(i) Brackish in 1915 (ii) Causeway in 1715 (iii) 6r in 1218?
(i) Mention two factors which support the following:
(i) The Sipu river is in its middle course
(ii) The rainfall in the region shown in the map extract is seasonal.
(j) What is the distance in kilometres between the distance stone 20 in 1818 and the causeway in 1715 along the metalled road?
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) Triangulated height 307.
(ii) The spot height 196.
(b)
Give the four figure grid reference of each of the following:
(i) The confluence of the Sipu River and the Mahadeviyo Nala.
(ii) Sheet rock.
(c) Measure the shortest distance in kilometres between the temple in, grid square 8192, and the perennial lined well at Bhakodar 8188.
(d)
What do the following represent?
(i) Black curved lines in 7788.
(ii) The blue line in the bed of the Sipu River.
(e)
(i) What is the general pattern of settlements in the region shown on the map?
(ii) Give a reason for your answer.
(f) Which is the chief form of irrigation shown in the map extract? Why is it necessary?
(g)
(i) What is the main form of transport in this region?
(ii) Give the map evidence for your answer.
(h)
(i) What is the compass direction of Dantiwada, 8582, fromBhadli Kotha, 7886?
(ii) What is the general direction of flow of the Arado. N?
(i)
(i) Name the type of drainage pattern found in grid square 8584.
(ii) What do you mean by 25r in grid square 8286?
(j)
(i) What is meant by ‘R.F.’?
(ii) What is the R.F. shown on this map extract?
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.
