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WEEK 5
TOPIC: INTERPRETATION OF PHYSICAL AND CULTURAL FEATURES ON A MAP
CONTENT:
- Physical features
- Cultural features
PHYSICAL FEATURES
SUB-TOPIC 1: VARIOUS METHODS OF REPRESENTING RELIEF
The term relief simply means the elevation of land areas or the height of an area above sea level. The various ways of relief representation on maps are discussed below:
- CONTOUR: These are lines drawn to join places of equal height, level or altitude.
- CONTOUR INTERVAL: This is the difference between the height of a contour line and the other. Contour lines are always numbered in meters e.g. 100m, 200m etc.
- FORM CONTOUR: These are broken lines used to represent elevation of a piece of land.
- HILL SHADING: This is a method of shading the height of a place with a single colour. The higher a hill or mountain is, the deeper the shade representing it.
- HACHURES: These are short lines used on map to represent the amount of slope a land area has. A high density of hachure shows that the place has a steep slope; whereas a low density of hachure shows a gentle slope. The absence of hachure means that the place is a flat land or plain.
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