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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"`
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संबंधित प्रश्न
What is the difference between the drainage pattern of the streams in 0624 and those in 0824?
Name two natural features in 0527.
Mention a special feature associated with the streams in grid square 9879.
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 is a Flat land?
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.
Which colours are used on toposheets? What is their significance?
What is Concave Slope and Convex Slope? Explain?
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.
Study the extract from the topographical sheet No. 63K/12, as shown in the figure below and answer the following questions-
- Convert 1:50,000 into a statement of scale.
- Name the major settlements of the area.
- What is the direction of flow of the river Ganga?
- At which one of the banks of river Ganga, Bhatauli is located ?
- What is the pattern of rural settlements along the right bank of river Ganga?
- Name the villages/settlements where Post Office is located ?
- What does the yellow colour in the area refer to?
- What means of transportation is used to cross the river by the people of Bhatauli village?
R. F. 1: 50,000
Part of the Topographical Sheet No 63K/12
