ELI5: Explain Like I'm 5

how does wind arise?

Wind is air that is moving. Wind happens because of differences in air pressure. When the air pressure gets too high in one place, the air moves away from that place to an area of lower air pressure. When the air moves, it creates wind. Wind is also created when warm air rises and cool air goes in to take its place. The wind is caused by the difference in temperatures between the warm air and the cool air.