Final answer:
Tropical cyclones originate as low-pressure systems called tropical depressions and can intensify into tropical storms and then hurricanes, typhoons, or cyclones, based on region-specific names and the exceeding of certain wind speed thresholds.
Step-by-step explanation:
Tropical cyclones can start as low-pressure systems known as tropical depressions, which are characterized by strong winds ranging between 25 and 38 miles per hour. They often form over warm ocean waters and can develop into more severe storm systems due to the Coriolis force, which affects their rotation. In the Northern Hemisphere, tropical cyclones rotate counterclockwise, while in the Southern Hemisphere, they rotate clockwise. These systems escalate from tropical depressions to tropical storms when their wind speeds reach 39 to 73 miles per hour, and are named accordingly. When the wind speeds exceed 74 miles per hour, they are classified as hurricanes, typhoons, or cyclones, depending on their location.
Complete Question:
Tropical cyclones can also start as mid low pressure systems called an__________