system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where does wind come from?
gpt
pressure differences caused by temperature differences.  
the best eli5 answer would be to just open your freezer about 4 inches and put your hand over the gap. You will feel the cold air come out of the freezer pretty quickly because the difference in room temperature and the freezer temperature cause the air to 'even out', moving the cold air in to the warmer air and thus, wind (on a very small scale :) )