I could swear I knew the answer in grade 5 and no longer remember but like at what point is it one step to the right and no wind and suddenly wind a step further. Like rain starts from the clouds (and I assume thunder too) but what about wind.
Uh, the sun? Wind is continuous
Terry Pratchett taught me that wind is caused by all of the trees waving about.
All weather is a result of heat exchange and pressure differentials caused by an unequally heated atmosphere. (The side toward the sun is warmer.)
For mere mortals: various exposed land masses gets heated by sunlight, and the air in contact with that land gets heated too.
When air gets warmer it expands (because atoms move and collide faster). That makes it less dense, so colder and denser air (with its slower atoms) falls in under the warm air and pushes the warm air up. If the ground is still warmer then that cold air gets heated too.
When that happens just at one point it makes air move around that warm ground in a “donut shape”, up in the center and out and down and back in.
When that happens at many different locations then those air movements collide with each other, and now we have complicated weather which takes big supercomputers to simulate.
Where does an ocean wave start?
All currents are circular when you zoom out far enough, and are driven by inequalities in energy. Inequalities in thermal energy, for wind, and wind energy, for waves. Inequalities in voltage drive electrical current, which is remarkable fluid like, in its behavior.
Where does a circle start? Just pick a point on the cycle and go around from there.
