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प्रश्न
Which colours are used on toposheets? What is their significance?
उत्तर
Six colours are used in a survey map to show various features. They are as follows:
Black: All names, river banks, broken grounds, dry streams, surveyed trees, heights and their numbering, railway tracks, telephone and telegraph lines.
Yellow: All cultivated areas.
Green: All wooded/forested areas, scattered trees and scrubs.
Brown: Contour lines, their numbering, stony waste, sand features.
Blue: All water bodies, where they contain water.
Red: Grid lines and their numbering, roads, cart tracks, settlements, huts and other buildings. Note: Sometimes we find white patches here and there to show barren lands.
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संबंधित प्रश्न
What does the blue coloured circle in the grid square 0619 represent?
How does the feature, indicated by the black curves in 0721, show that rainfall in this region is seasonal?
What are the following?
The black vertical line between eastings 09 and 10
Why do you find limited cultivation in the map extract? Give two reasons for your answer
What do you understand by a causeway?
The area is measured by grid square method?
Name the various types of settlement patterns found on toposheet.
Study the extract of the Survey of India Map sheet No. 45D/10 and answer the following questions:
(a) What is the compass direction of Sunset Point from the settlement of Anadra?
(b) What is the pattern of drainage in grid square 2315?
(c) Mention any two features seen in the map extract which indicate that the region has seasonal rainfall.
(d) Calculate the distance, in kilometers along the metalled road from the causeway in grid square 1715 to the distance stone marked 20 in grid square 1818.
(e) What advantage does a Representative Fraction have over a verbal scale?
(f) Give the six figure grid reference of:
(i) Anjini Devi ka Mandir
(ii) D 1327.
(g) Name the three different kinds of roads in grid square 2411 and the one in grid square 2515.
(h) Mention two occupations of the people living in the northern part of the region in the map extract. Give reasons to support your answer.
(i) What is the difference between the slope in grid square 2115 and the one in 1811. Give a reason for your answer.
(j) What is the purpose of:
(i) the fireline in grid square 2316.
(ii) the pipeline in grid square 2209?
(k) What do the following represent?
(i) The red square in grid square 2514.
(ii) 4r in grid square 1612,
(l) Abu is a popular holiday resort. Mention any three features seen in the map extract which attract holiday makers to Abu.
Study the extract of the Survey of India Map Sheet No. 45 D/7 (A – B) and answer the following questions:
(a) (i) What does the abbreviation R. F., stand for?
(ii) What does 20r (grid sq. 8295) mean.
(iii) What does V near Shergadh village in the south-east corner mean.
(b)
(i) What type of relief do you observe in north-west of the map (West Panswala)?
(ii) Why is the land shown in white shade not put to cultivation?
(c)
(i) What seems to be the importance of village Jegol in grid sq. 8590 in the south?
(ii) Find out the length of the joint stream of rivers Sipu, Varka and Hanva.
(d) What type of relief feature is found close to Varkanala and Hanvanala near Gangudra in the centre of the area?
(e) Give four figure grid reference of a well marked meander of Varkanala and Sipu river.
(f)
(i) What does the black line marked 24°30′ in the north denote.
(ii) What is the meaning of 72°20′ north-south black line in the western part of the map?
(iii) What do the figures 280, 300, 500 etc., written in brown on east margin of the map indicate.
(g)
(i) Point out two man-made features on the map.
(ii) What is the direction of the river Sipu 83 C 86 grid lines?
(iii) What is the grid reference (four figures) of the lime kiln located near Rampura village in the north-west?
Identify the survey sheet of your city. Make a list of the important features both man-made and natural.
