) Draw the contour lines to show the following features,
(1) Conical Hill
(ii) Plateau
(iii) Ridge
Answers
TOPOGRAPHIC MAPS AND ITS FEATURES - SHORTCUT
A topographical map shows the surface of the earth in detail. Topographical maps are also known as Ordnance Survey maps as these maps were originally drawn in Britain for the army under the direction of the Surveyor-General. These maps are multi-purpose and they show physical features such as valleys, hills, waterfalls and man-made features such as roads, railways, bridges, canals, etc.
MAP READING - DEFINITION
It involves describing the physical and cultural features as shown on a map as well as the interrelation between various features.
STATISTICAL DIAGRAM - DEFINITION
Statistical diagrams represent statistical data. Everything that exists has some dimensions. Things can have one, two, three or more dimensions. Length, area and volume of an object are measured with one, two or three dimensions. A point is supposed to be a non-dimensional entity. Number of points joining together to form a line is called one dimensional diagram.
RELIEF FEATURES OF TOPOGRAPHICAL MAP - SHORTCUT
Topographical maps are also known as 'Ordnance Survey Maps' as these maps were originally drawn in Britain for the army under the direction of the Surveyor-General. All topographical maps show two types of features:
(a) Physical features
(b) Cultural or Man-made features.
PRIMARY OR MARGINAL INFORMATION - SHORTCUT
Most of the information of maps is given on the margins of a topo-sheet and that is why it is also called marginal-information. Information on the Margins of topo-sheet includes:
Number of the sheet, latitudinal and longitudinal extent, eastings and northings, scale of the map, contour interval, direction of true north and magnetic north, legend or character sheet, year of survey and publication.
ONE AND TWO DIMENSIONAL DIAGRAMS - DEFINITION
A point is supposed to be a non-dimensional entity. Number of points joining together to form a line is called a one-dimensional diagram. A number of lines put together close to each other, will form an area which is called a two dimensional diagram.
FEATURES OF CONTOURS - SHORTCUT
1. Contour Interval (C.I.): It is the difference between two consecutive contour lines.
2. Vertical Interval (V.I): It is the vertical distance between two contour lines.
3. Horizontal Equivalent ( H.E.): It is the actual distance between two points on two contour lines.
4. Gradient: It refers to the slope of land.
FACTORS AFFECTING SETTLEMENTS - DEFINITION
The factors affecting settlements include:
(a) The relief and climate of the area
(b) Security
(c) Availability of transport and communication
(d) Centrally located settlements
(e) The availability of water and land
(f) The potential for mining and industry
Explanation:
contour lines mountain
