Question

why is earth in spherical shape

Answer 1

As countless photos from space can attest, Earth is round—the "Blue Marble," as astronauts have affectionately dubbed it. Appearances, however, can be deceiving. Planet Earth is not, in fact, perfectly round.

This is not to say Earth is flat. Well before Columbus sailed the ocean blue, Aristotle and other ancient Greek scholars proposed that Earth was round. This was based on a number of observations, such as the fact that departing ships not only appeared smaller as they sailed away but also seemed to sink into the horizon, as one might expect if sailing across a ball says geographer Bill Carstensen of Virginia Tech in Blacksburg.

Answer 2

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⇒ Here is ur questions answer...!!

√ The Earth is spherical because of the continuous rotational motion.

√ Like circle is the simplest path or figure we can imagine in 2D, where there's no beginning and no end, in 3D, the simplest shape is sphere. 

√  Due to the space time curvature created by Sun, Earth goes round it and due to consistent rotational motion, the matter of Earth was automatically shaped to result in the simplest shape and that's a sphere.

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