Judy Carol Worth, age 10, of Tulsa,‑OK for her question:

Where does the wind come from?

Wind is no more than moving air and air is the blanket of atmosphere which enfolds the entire globe to a height of perhaps a thousand miles, The weathery layer of the atmosphere is the troposphere which reaches some ten miles above our heads. Here the air is in constant turmoil, heating and cooling, rising and falling and blowing this way and that around the globe,

The trade winds and the westerlies tend to sweep clear around the earth. But the planetary winds are constantly upset by local conditions. Here the winds tend to blow as masses of dense, heavy air sweep in to fill up masses of thin, lighter air and these local winds can come from any direction.