Final answer:
The energy that powers a hurricane comes from the heat released during the condensation of rising moist air over warm ocean waters, helped by the low atmospheric pressure and the Coriolis effect due to Earth's rotation, creating a self-sustaining system of strong winds and heavy rainfall once it reaches hurricane status.
Step-by-step explanation:
The energy that powers a hurricane is primarily derived from the heat released when moist air rises and condenses to form clouds and rain. This process begins over warm ocean waters, typically greater than 80 °F, where the heat causes the air to rise rapidly. The rising air creates a low pressure area beneath it, drawing in surrounding air and setting up strong wind currents.
The Earth's rotation then imparts the Coriolis force, causing the storm system to rotate cyclonically — counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. As the atmospheric pressure drops within the system, it results in the intensification of the storm and an increase in wind velocity. Furthermore, this process feeds on itself as more warm, moist air is drawn into the cyclone, releasing more heat and driving stronger winds.
Thus, the combination of warm water, the resulting condensation and heat release, and the Earth's rotational forces are key in powering a hurricane. Once the storm system achieves sustained winds of 74 miles per hour, it is classified as a hurricane.