Aetiological Myth

I am now asked to Define and provide an example of an aetiological myth. According to my Trumbo (a book given to me by my instructor) this type of myth is one is a story that explains something that we observe in nature. I's say that something such as the muses in the first paragraph of page three of the Theogony would be a great example of this type of myth. the muses inspire writers, poets, etc. to write about the gods in Greek culture. In the Theogony, these muses inspire Hesiod to write beautiful poems about the gods, namely Zeus.