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प्रश्न
What are ‘National Grid Reference’?
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उत्तर
Grid lines are imaginary lines drawn on a survey map in red colour. The origin of the Grid is a point south-west of the map. The ‘National Grid Reference’ is used for indicating the correct position of a particular feature on the map.
APPEARS IN
संबंधित प्रश्न
Mention one man-made feature in the map, which also provides evidence that the rainfall is seasonal.
What are the following?
The black vertical line between eastings 09 and 10
Name the left bank tributary of the main river.
What is a Flat land?
Describe the importance of colours on the toposheet?
How is the importance of settlement reflected in a map?
(i) What is the importance of a Relief Map.
(ii) How can we show occupations by the evidences of names or by inference of relief features?
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
(a)
(i) Give the four figure grid reference of the settlement of Hamirpura.
(ii) Give the six figure grid reference of the temple in the settlement of Jolpur.
(b)
(i) What does the blue coloured circle in the grid square 0619 represent?
(ii) What is the compass direction of Dantrai from Jolpur?
(c) What is the difference between the:
(i) Pattern of settlements in 0725 and the settlement of Idarla?
(ii) Drainage pattern of the streams in 0624 and those in 0824?
(d)
(i) What is the value of the contour line in square 0226?
(ii) What is the contour interval in the map?
(e) Mention any two factors which provide evidence that the region in the map extract is a rural region.
(f)
(i) How does the feature, indicated by the black curves in 0721, show that rainfall in this region is seasonal?
(ii) Mention one man-made feature in the map which also provides evidence that the rainfall is seasonal.
(g)
(i) Name two natural features in 0527.
(ii) Name two manmade features in 0325.
(h) Name two features which make Dantrai a more important settlement than the other settlements in the map extract.
(i) Calculate the area of the region which lies to the south of northing 21 in square kilometres.
(j) What are the following?
(i) The black vertical line between eastings 09 and 10.
(ii) 302 in grid square 0425.
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) The temple in village Dhavli
(ii) ∆ 480
(b) What do the following indicate?
(i) 6r in grid square 1903
(ii) The word Brackish in grid square 1403.
(c)
(i) In grid square 1909, several contours merge at one point. What does this represent?
(ii) State the significance of the red dotted lines in the map extract.
(d) Name the type of rainfall experienced in the region shown in the map extract. Give a reason to support your answer.
(e) How does the drainage pattern in grid square 1606 differ from the drainage pattern in grid square 1708?
(f)
(i) What is the pattern of settlement in grid square 1904?
(ii) Name the settlement that has a post office.
(g) Name two landforms represented by the pattern of contours in grid square 1608.
(h) Calculate the ground distance in kilometres along the metalled road between the causeway in 1502 and the distance stone marked ’14’ in grid square 1203.
(i) State two reasons for the absence of human habitation in the north eastern region of the map extract.
(j)
(i) Mention the difference in height between the highest spot height in the map extract and the contour height in grid square 1006.
(ii) What is the compass direction of Patlawa ka Goliya (590.) from Kacholi Dunga (443.)?
Write short note on ‘Marginal Information’ in Topographical sheets.
