The earth isn't flat or circle. It is a sphere. Well, it was discovered centuries ago by a traveler in which the name I cannot remember. He traveled the world and put a mark in different places, he found out that the world is sphere because of the shadows of the markers. Also, as of the modernity today, it is proved by the satellites/astronauts that have been outside the earth.
It's so cool to have this kind of topics you know.. Anyway, you'll find more facts in the internet.
The Earth is flat and the Sun is a small object orbiting above and the shadows cast by the markers agree with this fact. I can go a step further and completely debunk any idea the Earth might be a globe based on the shadows by pointing out that the Sun's rays don't strike the Earth in parallel.
You are only saying this because you are just relying on your own perspective. Of course, you think that the sun is only a small object because you're only seeing through your naked eye. It is proven that the sun is bigger than the earth 100x. Btw, Isn't the word globe and sphere synonymous. LOL