Questions for the globe skeptics

Hi. I'm a person quite curious about various world views, and I came along this sub. I had some questions that I wanted to ask you all to gauge your viewpoints. They are as follows:

1. Does the Earth have area or volume?
2. If you go beyond the international date line, do you fall into an abyss?
3. Explain how gravity and magnetic poles work.
4. Why isn't the moon upside down in the Southern Hemisphere?
5. Did Galileo never exist?

Thank you so much for reading this.