Advertisements
Advertisements
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.
Advertisements
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
How does the feature, indicated by the black curves in 0721, show that rainfall in this region is seasonal?
Give the six figure grid reference of Triangulated height 217
What type of rainfall is experienced in the region shown in the map extract? Justify your answer giving one reason.
What do you mean by ‘Marginal Information’?
Which colours are used on toposheets? What is their significance?
Give a summary of dimension and scale of topographical maps.
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. 45 D/7 (A and B) and answer the following questions.
(a) Give the six figure grid reference of
(i) ∆ 277 (→) (ii) Lime kiln near Rampura (→) (iii) Stony waste (→).
(b) (i) What does the blue line in the Sipu river indicate?
(ii) In which village do you see the nodal function 7 What do you mean by this?
(c) (i) What does the black lines along the streams in the grid square 9199 indicate?
(ii) How are these features formed?
(iii) What type of region is shown in grid square 8696?
(d) Give the six-figure grid reference of the following:
(i) Lime Kiln near village Panswala.
(ii) Well with water near village Gonodara.
(iii) Dry tank near village Mohudi Moti.
(e) (i) What is the direction of the flow of Sipu river?
(ii) State why does it flow in this particular direction?
(f) Mention three natural features in the grid square 8998.
(g)
(i) What is the meaning of the term open scrub printed on the map.
(ii) How do you get an idea of the general nature of the slope in this area?
Write short note on ‘Marginal Information’ in Topographical sheets.
Identify the survey sheet of your city. Make a list of the important features both man-made and natural.
