1. Isaiah 40:22, refers to the earth as a circle. A circle is a 2 dimensional figure, it is flat. O <- A circle (depending on which font you use, but you get the point). Other passages speak of people traveling to the tops of mountains to see "all of creation". One cannot do this standing on a globe.
2. Joshua 10:12-13, Psalsm 104:5, 1 Chronicles 16:30 should get your brain working on which passages claim the earth stands still and the universe revolves around us.
3. Said age is arrived at by counting generations listed in the bible from Adam and Eve forward. When this is done, the age of the Earth from the supposed creation is app. 6,000 years old.
4. Sorry, no, there isn't enough water on, or in, the planet to compeltely inundate the surface. There is no "Waterworld" movie type scenario possible. Even should both polar caps melt completely, we would only loose a few hundred miles of coastline land.
And please, not the foolish apologetic "known world" crap.
The highest land elevation in Syria, for example, is some 2,814 meters above sea level. Richmond, VA sits at some 170 FEET above sea level.
There is also the compelete and utter lack of any archeological evidence for any widespread flood.
Also, using the same timeline as above, ie counting generations in the bible, we see that said flood would've occured at app. 2200 BCE. Considering that we have writtings from cultures "in the known world" much older than this, feel free to explain why there are no 370 day gaps in those records, or why no one mentions anything about even having a period of damp let alone being flooded out.
And please, don't get me started on the laughability of the whole Noah and Ark myth either.