More than likely, the earth before the flood was going around the sun perpendicular on its axis. This gave uniform weather for each one year period. The sun was striking the earth continually at the equator giving the canopy and green house effect. The earth was covered with a great cloud canopy that brought about uniform weather year around. There was longevity of life just as the Bible said because radiation was blunted by the clouds.
The flood took place because of the tilt of the earth. What caused that no one knows. With the contrast of weather, hot and cold, the canopy fell bring on a great flood of water that covered the globe. This brought about heat at one end of the earth, say the northern hemisphere, and cold at the other extreme, providing weather patterns. The Bible says this also. "Then there were seasons, summer, fall, winter, and spring." When the water canopy fell the cold trapped the great elephants with food in their mouths in Siberia.
By the way, the creation days were creation days. Because of biological interlocking, these are six 24-hour days. They could not simply represent stages of evolution. The animal kingdom is interdependent. All life is dependent upon all life! The flowers cannot survive without the birds and the bees. Life could not take millions or billions of years to form because of this interdependency. And life does not develop by billions of years and by chance.
Have you ever seen in a documentary the huge flowers that grow the size of a man? And they live only for a day or two? They spring up several inches each hour! Only certain flies are attracted to them. And when the fly starts down into the flower it cannot turn around. As the fly descends into the flower it leaves its pollen in the plant which causes another flower to grow. And this happened by chance? Impossible! --Dr. Mal Couch (2/11)