Creation Story Thought Throwdown...

So, this week in the sunday school class i teach for the 7th graders we are talking about the Creation story in Genesis 1:1-2:4 this week and I was reading it today a couple of thoughts were running through my head so i need get some feedback on this. See what you all think. Look at Genesis 1:5. Done? No, seriously get a bible and look it up. Or go to www.youversion.com and look it up there. (Awesome site btw) Now look at Genesis 1:14. Seeing anything? In verse five this happens: "God called the light “day,” and the darkness he called “night.” And there was evening, and there was morning—the first day. " Verse 14 reads this way: "And God said, “Let there be lights in the expanse of the sky to separate the day from the night, and let them serve as signs to mark seasons and days and years," God creates "light" twice. Or does he? Where do we get the "light" during the day? From what source? The sun, and what about the night, well of course its the moon. So the creating of the sun and the moon and the stars happens in verse 14, right? But in verse 5 God still creates some form of "light." Ok go with me on this. Could this be God creating good and evil? Because one is light and one is dark. Thoughts? Please get back to me on this. I'm really intrigued about the responses on this one.