Question

How was it proved that the Earth was spherical in shape

Answer 1

Answer:

The proofs are :

• All celestial bodies are equal - Sun,moon and all other celestial bodies appear to have circular outline.As earth belongs to this system ,there is no reason why earth should be an exception.
• Circumnavigation of the earth - Time and again people traveling round the world in different directions came back to the starting point.
• Line of visibility increases with height - In attachment
• Sunrise and sunset - If earth were flat , the sun would rise and set at the same time for all the people in the world.
• Horizon is circular - As viewed from the deck of a ship, the horizon appears to be circular in shape.
• The earth's surface is curved - Surveyors when driving poles of the same size into the ground would find the central pole projecting slightly above the other two due to the curvature of the earth (attachment)
• Lunar Eclipse - The shadow cast by the earth on the moon during lunar eclipse is always circular. (attachment)
• Aerial photography - The aerial photographs of the earth sent by artificial satellites and various spacecrafts clearly show the curvature of earth's surface.

Answer 2

Answer:

How was it proved that the Earth was spherical in shape?

=> Ferdinand Magellan, a Portuguese Explorer , sailed around the world and Proved that the Earth is round. Pictures taken from space have also proved that the Earth is like a sphere.

Hence, it was proved that the Earth is spherical in Shape.

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