Chapter: Maps

• Introduction to Maps

  • Definition: Representation of Earth’s surface or a part of it on a flat surface.
  • Comparison with Globe:
    • Globe: Shows the whole earth, useful for macro-level view, hard to carry.
    • Map: Shows whole earth or part, flat format, easy to carry, can show detailed information.
  • Atlas: A collection of maps of different sizes and scales.

• Types of Maps

  • Physical Maps
    • Shows natural features.
    • Examples: Mountains, plateaus, plains, rivers, oceans.
  • Political Maps
    • Shows man-made boundaries.
    • Examples: Cities, towns, villages, states, countries with borders.
  • Thematic Maps
    • Focuses on specific information.
    • Examples: Road maps, rainfall maps, forest/industry distribution maps.

• Components of Maps

  • Distance
    • Maps are reduced-scale drawings.
    • Scale: Ratio between actual distance on ground and distance shown on map.
    • Types of Scale: Small scale (large area like countries) vs. Large scale (small area like village/town).
  • Direction
    • Cardinal Directions: North, South, East, West.
    • Intermediate Directions: North-East (NE), South-East (SE), South-West (SW), North-West (NW).
    • Compass: An instrument used to find main directions (needle always points North-South).
  • Symbols
    • Used to show features (buildings, roads, bridges, trees) where actual size/shape cannot be drawn.
    • Conventional Symbols: Internationally accepted standard symbols for maps.

• Sketch vs. Plan

  • Sketch
    • Based on memory and spot observation.
    • Not drawn to scale.
    • Rough drawing.
  • Plan
    • Drawing of a small area on a large scale.
    • Shows detailed information (e.g., length and breadth of a room).