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Suggested scale for geographical map is ____
1 cm = 5 km to 150 km
1 cm = 1 km or more
1 cm = 5 km or less
1 cm = 100 m or less
1 cm = 5 km to 150 km
Geographical maps are categorized as small-scale maps because they represent large areas of the Earth's surface on a limited sheet size. A scale range of 1 cm = 5 km to 150 km is standard for these maps to maintain readability over regional or national extents.
Geographical maps are categorized as small-scale maps because they represent large areas of the Earth's surface on a limited sheet size. A scale range of 1 cm = 5 km to 150 km is standard for these maps to maintain readability over regional or national extents.
RF=Ground┬аDistanceMap┬аDistanceтАЛ тАФ Representative Fraction
The principle involves the Representative Fraction (RF), defined as the ratio of map distance to ground distance. Smaller scale maps have a larger denominator in the RF, implying significant generalization of topographical features to fit the vast geographical extent within a manageable graphic layout.
Geographical maps are used for planning at national or continental levels.
Small scale maps provide less detail but cover a significantly larger area compared to cadastral or engineering maps.
A standard geographical scale often results in an RF value such as 1:500,000 to 1:15,000,000.
Covers large geographical regions on a single sheet.
Ideal for thematic mapping and regional planning.
High level of generalization leads to loss of fine terrain detail.
Not suitable for precise engineering measurements or land surveys.
Atlas creation
National highway mapping
Regional climatic studies
Large-scale maps (e.g., 1 cm = 100 m) are used for building sites and detailed project planning.
Option B represents a medium-scale range, often used for topographical surveys, not purely geographical mapping.
A is correct тАФ Geographical maps use a small scale, typically ranging from 1 cm = 5 km to 150 km, to represent vast areas.
Remember: The larger the ground area covered per unit map length, the smaller the scale of the map.