Let me explain this so that the children can understand.
The continents are not "floating" on anything. The earth is constantly spinning on it's axis. Have you ever taken a yo-yo, or anything tied to a string and spun it around over your head? When you let go of the string it flies of as if you threw it. While you are holding the string it continues to spin around over your head.
Now think of the string as gravity. You know the same stuff that keeps us from flying off? Simple and basic.
P.S. please learn to use spell check if you don't care enough to learn to spell.
This guy knows what's up.