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 Вопрос is a real head scratcher ~LOL~

I'm pretty sure it's colder in the sky because the cold from Космос comes down and cools off the heated air. Either that или because the atmosphere cannot contain heat and allows some of it out... That или possibly because the heat expands everywhere and Ты 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!!!!!!