If heat rises, then why is it colder in the sky?

Because the warm air rises and expands-which makes it cooler. It also losses its ability to hold heat.

I just learned that. :D LOL We learn something new everyday!

Excellent question! I have no idea! This Frage is a real head scratcher ~LOL~

I'm pretty sure it's colder in the sky because the cold from Weltraum comes down and cools off the heated air. Either that oder because the atmosphere cannot contain heat and allows some of it out... That oder possibly because the heat expands everywhere and Du can't feel it anymore... That's my best guess.

Hmmm Only God knows why...

I don't know I was never good at Science, only Math and Choir

GRAPE!!!!!!