Here's a breakdown:
* Direction: They blow from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere.
* Cause: They are caused by the Hadley Cell, a large-scale atmospheric circulation pattern. Air rises at the equator and sinks at around 30 degrees latitude. This creates a zone of high pressure at 30 degrees and low pressure at the equator. Air flows from the high-pressure zone to the low-pressure zone, creating the trade winds.
Let me know if you have any other questions!