Explain to a 4-year old why people below the equator are not tilted or suspended upside down So I just bought a globe for my extremely inquisitive soon to be 4-year old son. He knows the very basics of the solar system and knows that we live on planet Earth and also knows the concept of gravity.

While i was explaining to him what the illuminated equator line is he asked me How do people stand below this line? (Look at the globe from a 4 year old's eyes and you will wonder the same)

I explained to him that earth is not as small of a sphere as this globe depicts and almost everywhere it will be relatively flat but then he said there are so many places on this globe at the bottom if you live there earth will be above you and gravity will hold you upside down.

How do I explain it to him?
Explain that "down" is more or less toward the center of the Earth, and that direction changes with location. (For a four year old, skip the "more or less" part. It's just toward the center of the Earth, period.) The direction of "down" doesn't change much on trips across town, but it does change with larger trips.

If you have taken your son on a long trip (just a few hundred miles or kilometers will do), show your son those two locations on the globe. The direction of "down" at that remote location and the direction where you live point in slightly different directions for a trip of a few hundred miles, vastly different directions for a longer trip.  Ask him if he felt tilted sideways at that remote location.