Geography
How does the sighting of a ship from the seashore prove about that the earth is round in shape?
Answer
While standing at the 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 comes into full view. This can only happen when the earth's surface is curved. Thus, it is proved that the earth is round in shape.
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