And I do not write, prove, because finding proof is hard.
| Topic | Question | Example |
| Sun & Moon | How does the angular size of the Sun does not change? | |
| How can we see the sun move at the same speed in winter, as in summer on the equator | ||
| What causes solar/lunar eclipses | ||
| How are we able to predict solar eclipses and equinoxes, which are based on mathematical formulas and a globe model. | ||
| How do seasons work, why is there a difference in southern and northern summers/winters? | ||
| How can we see the same angle to sun and moon on | ||
| Stars and planets |
How do southern hemisphere stars revolve around a single point and see the same star pattern everywhere on the southern hemisphere | |
| What is the mathematics behind the movement of the stars and celestial bodies? | ||
| Where did Aristarchus, Eratosthenes and Kepler go wrong in calculating the distances between celestial objects? | ||
| Maps | Why is it impossible to create a (flat) map with both distance and angles correct? | |
| How can current models work (google maps/earth, Stellarium, SolarSystemScope)? | ||
| How does GPS and Glonass work? | ||
| Gravity | Why is there gravity? | |
| If everything we observe about the solar (the path of the planets around the sun, and moons around the planets), why does that not apply to us (i.e. Gravity)? | ||
| Why is there a direction of gravity? | ||
| How do tides work? | ||
| Density and Buoyancy | Why is there a direction? And why is this direction up/down and not any other direction? | |
| What is the force causing this? | ||
| Curvature | Why do we see curvature in viewing mountains at a distance, that cannot be explained on a flat earth, even with extreme refraction? | |
| Why do we see only the top of ships and lighthouses and not the bottom, unless they are compressed | ||
| How does refraction work on a flat-earth, as the layers of air are not bend and light should travel straight through these layers | ||
| Seismology | How does sound travel through the earth, from one place to another, from any spot on the earth to the opposite spot, regardless of the position on the globe ? | |
| How do earthquakes sound maps go around the globe, and around again? | Do Earthquakes (dis)prove Flat Earth? | |
| Magnetic Field | How do compasses work on a flat-earth model? | |
| Why do we need different compasses on the southern and northern hemisphere, to compensate the tilt | ||
| How is earth's magnetic field generated? |