Answer:
Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters. What is it?
I'm a god. I'm a planet. I measure heat.
When liquid splashes me, none seeps through. When I am moved a lot, liquid I spew. When I am hit, color I change. And color, I come in quite a range. What I cover is very complex, and I am very easy to flex.
Different lights do make me strange, thus into different sizes I will change.
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
A first job for many kids, this could be described as "Media Distribution Management.