Flat Earth Questions

For some reason I've been getting a lot of anti-flat earth videos on YouTube lately, ones where the video debunks other videos about flat earth. So I've been thinking about the whole "flat earth" movement (which apparently there is a movement) and questions I'd like to ask. These are all based on things even a flat-earther should admit exist. They say look at the world through your own eyes and other senses. That works for all of these. Except maybe #8.

1) If the earth is flat, what causes day and night?
2) If the earth is flat, what causes the seasons?
3) If the earth is flat, what causes the moon to have phases?
4) If the earth is flat, why can't I see some stars in winter, and others in summer (e.g., Orion).
5) If the earth is flat, what is gravity?
6) If the earth is flat, why can I see with binoculars or a small telescope, moons orbiting Jupiter?
7) If the earth is flat, what causes tides?
8) If the earth is flat, why hasn't anyone found the edge?
9) What causes sunsets and sunrises to be colored.
10) Why is the sky blue?
11) If the moon is "it's own light," why can I (and you) with binoculars or a small telescope see craters and mountains (this works best when the moon isn't full)?

So, if you know a flat-earther, you could pass these questions along for me. Or if you are a flat-earther, please tell me  your answers in the comments below.

Anyone, anyone?