Give some examples proving the sphericity of the Earth.

Increasing the horizon range when climbing to a certain height. If you look at the removal of the ship at sea, the hull of the ship will disappear first, and then the rest of the superstructures. Travel around the world. Pictures from space.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.