Question

give two proof the sphericity earth

Answer 1

✪Ferdinand Megallan covered the entire length of the globe starting from a point in the forward direction and eventually reached the same point.
✪If a moving ship coming towards the observer is observed... it keeps moving from the horizon. first the upper part of the ship is visible and then gradually the lower part also as the ship proceeds... had the earth been flat the whole ship would​have been visible at once.

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Answer 2

.we know that earth rotates and only a spherical object can rotate.

the day and night only due to his rotation if it is not spherical there will be some places where there is only day and some places where there is only night.