Please define materialism and naturalism in order to understand your statement. Evolution I understand. Thanks
Basically, it is a belief that the material/physical 'world' is all there is. It stems from a pre-big bang belief that the universe and all the laws of physics are un-changing and eternal. For example, it does not allow for the existence of conscience as a seperate entity from your physical brain, just as an example. Naturalism is a backbone belief of evolution. Only naturally known processes can be considered for somethings existence. I.e., no miracles. The theories go hand in hand, much like religious theories do.
Dont be scared guys, good dialogue can actually cause you/us to learn something. Just keep the hateful political crap out of it and have an open mind.