As far as thrills go, Seven Dwarfs Mine Train is pretty calm. There aren’t any big drops or inversions and even most kids can handle it.
If you like thrill rides, Rock ‘n’ Roller Coaster is for you. It is the fastest and most intense roller coaster at Disney World.
Even though it’s not very tall or fast, since the whole ride is in the dark, it makes you appear to be going much faster than you really are.