Question
Highlight three proofs that the earth is spherical.
Answer
- The gradual emergence of a ship approaching the shore.
- Circumnavigation of the earth along straight path leads one to the starting point from the opposite direction.
- The different time during which the sun rises and set in different parts of the world.
- The earth is a planet and all planets are spherical.
- The circular shadow cast by the earth during a lunar eclipse.
- The circular shape of the earth as seen on photographs taken from satellites.
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