. Europe and other continents . time in the united states. Fig. 22. Standard time belts of the United States. Find the central meridian for eachtime belt. Why are the actual boundaries of these belts so irregular? rubber ball upon a table. You could not possibly do thiswithout stretching it out of shape along the edges. A small part of the earth is so nearly flat that it may berepresented on a map without distortion ; but when halfof the whole earth is to be shown there is much distor-tion. For example, in a map of the hemispheres (Fig. 20)you can easily see that the meridian in the
. Europe and other continents . time in the united states. Fig. 22. Standard time belts of the United States. Find the central meridian for eachtime belt. Why are the actual boundaries of these belts so irregular? rubber ball upon a table. You could not possibly do thiswithout stretching it out of shape along the edges. A small part of the earth is so nearly flat that it may berepresented on a map without distortion ; but when halfof the whole earth is to be shown there is much distor-tion. For example, in a map of the hemispheres (Fig. 20)you can easily see that the meridian in the centre isshorter than those on the outside ; but on a globe allthe meridians are of the same length, since all reach from MAPS. {LATITUDE AND LONGITUDE) 23 the equator to the poles. On such a map, therefore, landsat the edge must be represented as longer from north tosouth than those near the central meridian. A map of the whole earth, like Figure 25, is called a. I hSH° 130 i2ono~Too—90—BO_fo~ToTH? I 7 I
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