How are we sure about the shape of the Earth?
Answers
Answer:
aerial photographers, ship,eclipes and many as such experiments are done to prove the shape of the Earth which is actually geiod.
Answer:
Explanation:
proof of earth is spherical in shape:
1: Sighting of a ship : while standing at seashore watching an approaching ship we first see only its mast .Then as it comes closer we can see the deck in the middle then its funnel and finally the hull . This can happen only when the earth surface is curved.
2: the bedford level experiment : three poles of equal length were fixed at intervals of 5 km.It was ensured that the poles had the same height above the water in the canal,the middle pole looked slightly higher.it could not happen if the earth had a flat surface.
3: pole star : the pole star can be seen at an angle of 90 degree at the north pole.It lies in line with the axis of the earth and its angle decreases towards the equator .At the equator,the angle is 0 degree . This can happen only in an arc of a circle . if earth were flat the pole star would have the same height for all latitudes.
4: satellite pictures
5 lunar eclipse
6 circular horizon
7 circumnavigation
8 sunrise and sunset
9 the earth as a heavenly body.