I suppose the Earth would be flat if we cut off the crust and completely destroy the under ground.
I honestly don't understand where these people randomly start screaming that the Earth is flat.
__________-- How we Know --___________
Q: How can one prove the earth is round?
A: Now that we have access to space, the easiest way to prove the Earth is spherical is to leave it and view it from a distance. Astronauts and space
probes have done just that. Every picture of Earth ever taken shows only a circular shape, and the only geometric solid which looks like a circle from
any direction is a sphere.
One of the oldest proofs of the Earth's shape, however, can be seen from the ground and occurs during every lunar eclipse. The geometry of a lunar
eclipse has been known since ancient Greece. When a full Moon occurs in the plane of Earth's orbit, the Moon slowly moves through Earth's shadow.
Every time that shadow is seen, its edge is round. Once again, the only solid that always projects a round shadow is a sphere. *extracted from
source:
www.physlink.com...*
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There is your answer.