What is a map? A map is a generalised and reduced representation of (a portion of) the curved surface of the earth on a flat surface.
Topo-whaaat ? What is a topographic map? A map that shows the features of the Earth’s surface. What features are included? Physical (natural) features (like hills, valleys, cliffs, rivers, marshes, vegetation) Constructed features (like towns, roads, railways and sports fields).
How do we identify these features? Conventional signs indicate features on maps. The use of colour aids the interpretation od these symbols.
A letter or symbol indicating a particular feature What is a conventional sign? Point Line Area
Where does colour come into the picture? Making it easier: Distinguish between two types of landscape: the natural / physical landscape the constructed / human landscape Five colours - Brown - Blue - Green - Black - Red
Symbol Brown
Symbol Blue
Symbol Green
Symbol Red
Symbol Black
How do we find positions on topographical maps? By using a grid reference we can easily pin point information on a map.
Equator (0°) Northern Hemisphere Southern Hemisphere North Pole (90° N) South Pole (90° S) Latitude
Western Hemisphere Eastern Hemisphere Greenwich Meridian 0° South Pole (90° S) North Pole (90° N) Longitude
Eastern Hemisphere Western Hemisphere Northern Hemisphere Southern Hemisphere S;E Latitude & longitude
A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 D1 D2 D3 D4 D5 E1 E2 E3 E4 E5 F1 F2 F3 F4 F5 A B C D E 1 F 2 3 4 5