Hello, maybe a strange question, but at the moment it's storming over here.
I've learned in school that wind is caused by pressure differences in different areas. Pretty much like letting the air out of the balloon (high pressure) and into the open (low pressure).
It's logical why letting the air out of the balloon creates something like a gust of wind, but this is because there is a relatively small opening in the balloon through which a lot of air escapes.
I can't wrap my head around this principle working on a global scale.
Unlike the balloon the air on top of the earth has no small gaps or openings, so the cause of storms and hurricanes must be a huge air pressure difference.
However, if the air moves from a high pressure area to a low pressure area, one would expect that eventually both areas whould have the same air pressure.
On a global scale where air moves freely, I would expect the air pressure would be spread out in due time.
My question, what on earth raises or lowers air pressure in certain spots so much that it can create storms?
In the balloon example the pressure is contained within the balloon until someone lets it out. In the outdoor air this principle doesn't apply.
I'm no scientist and I'm probably missing something obvious here, but I'd like to know what.
Thanks in advance.