You must complete Map Work: Map Enlargement to unlock this Lesson.
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OBJECTIVES: At the end of the lesson, students should be able to:

  • give the meaning of Relief (also called Physical features).
  • give at least five examples of Physical features i.e. contour lines, form lines, trigonometrical station, bench marks, etc.
  • mention and explain at least five Physical features.
  • identify and interpret at least five physical features (reliefs).
  • draw at least five physical features (reliefs) found on the map extract given to them.

 

METHODS OF REPRESENTING RELIEF ON MAPS

Relief of an area refers to the position and character of the highlands and lowlands. Thus, the methods of representing such relief on maps include the following:

  • Contour: There are lines draw to join places of equal height, level or altitude. The sea-level is taken as the starting point in all measurement in metres or feet.
  • Contour interval: in a particular map, contours are of equal intervals e.g. the above contour has contour interval of 100m.
  • Form Lines: These are line drawn on a map like contours but are based on estimations.

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