Answer:
I am seen in the water. If seen in the sky I am in the rainbow a jay's feather and lapis lazuli.
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
Send poorly behaved children to me and let them sit here. What am I?
I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths.
I had a bright start but I couldn't take the pressure. I consume everything yet I don't eat anything.
The answer I give is yes, but what I mean is no. What was the question?