Page 76 - 4670
P. 76
UNIT 6
MAP PROJECTIONS
I. READING AND LEARNING
Task 1. Read and memorize the following words and word-
combinations.
planar – плоский;
compass direction – напрям по компасу;
to distort – cпотворювати;
scale – шкала, масштаб;
map projection – картографічна проекція;
cartographer – картограф;
equal-area map – відображення, що зберігає площу;
conformal – рівнокутний, конформний;
equi-distant map – карта, яка відображає рівновіддалені
відстані;
navigational map – навігаційна карта;
dimensional – вимірний (наприклад, три-вимірний)
Task 2. Read and translate the text.
Text 1 Map projection
It is impossible to accurately represent the spherical surface of the
Earth on a flat piece of paper. While a globe can represent the planet
accurately, a globe large enough to display most features of the Earth
at a usable scale would be too large to be useful, so we use maps. Also
imagine peeling an orange and pressing the orange peel flat on a table
- the peel would crack and break as it was flattened because it can't
easily transform from a sphere to a plane. The same is true for the
surface of the Earth and that's why we use map projections.
The term map projection can be thought of literally as a
projection. If we were to place a light bulb inside a translucent globe
and project the image onto a wall - we'd have a map projection.
However, instead of projecting a light, cartographers use mathematical
formulas to create projections.
Maps are called projections because map-makers have to project a
3-D surface onto a 2-D map. A projection is a representation of one
76