Let's first bear in mind that different cultures have different creation myths. But there are some general conclusions one can draw from all of them regarding your question. It is my opinion that these were an attempt to explain what was inexplicable to early man, so, in that sense perhaps they might qualify as a very primitive form of scientific inquiry. Some creation myths took into account the geography of their origins. For example, the Japanese creation myth with its origins in the sea, which makes sense since Japan is surrounded by water. There was also some attempt to take into account cause and effect, albeit a quite primitive attempt. I would not characterize creation myths as early forms of science, per se, but I would say that the same impulse that created the myths, a curiosity, a yearning for explanation of natural phenomena, is what eventually turned into genuine science.