Question

Didifferentiate between great circle and small circle

Answer 1

great circle are usually big in size as compared to small circle

Answer 2

A great circle is the largest circle that can be drawn on the surface of a sphere. It has the same radius of the sphere on whose surface it rests. Cut a sphere into two symmetrical halves, and the hard edge of the cleave plane is a great circle.

A small circle is any other circle that can be drawn on a sphere. So (on a spherical earth, all latitudes except the equator are small circles). Take a perfect sphere and cut into two unequal parts. The hard edge of the cleave plane in that case is a small circle.
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