Science
A student was looking at the map below that shows where hurricanes are likely to form. She observed that more hurricanes formed over tropical oceans than over colder oceans. Which of the following best explains this observation?
a
Water has fewer currents in tropical oceans than in colder oceans.
b
Air has more moisture over tropical oceans than over cold oceans
c
Water has more currents in tropical oceans than in colder oceans.
d
Air has less moisture over tropical oceans than over cold oceans.
B. Air has more moisture over tropical oceans than over cold oceans.
The best explanation for the observation that more hurricanes form over tropical oceans than over colder oceans is option b: Air has more moisture over tropical oceans than over cold oceans.
Hurricanes are formed through a process that requires warm, moist air rising from the ocean's surface. In tropical oceans, where the water is warmer, there is more evaporation, leading to higher levels of moisture in the air. This moisture-rich air provides the necessary fuel for the development and intensification of hurricanes. In colder oceans, there is less evaporation and consequently less moisture in the air, making it less likely for hurricanes to form.
To determine the best explanation for the observation, we can analyze each option:
a) Water has fewer currents in tropical oceans than in colder oceans.
This statement is incorrect. Tropical oceans are known for having strong ocean currents, such as the Gulf Stream and the Kuroshio Current. These currents can have an impact on the formation and intensity of hurricanes.
b) Air has more moisture over tropical oceans than over cold oceans.
This statement is true. Tropical oceans are characterized by warm temperatures, which lead to more evaporation. The warm, moist air rises and forms clouds, providing the necessary ingredients for the development of hurricanes.
c) Water has more currents in tropical oceans than in colder oceans.
This statement is true. As mentioned earlier, tropical oceans are known for their strong ocean currents. These currents can contribute to the formation and intensification of hurricanes by providing a continuous supply of warm water to the storm system.
d) Air has less moisture over tropical oceans than over cold oceans.
This statement is incorrect. Tropical oceans have higher temperatures, which facilitate evaporation and increase the moisture content in the air. This moisture is essential for the formation and strengthening of hurricanes.
After analyzing each option, it can be concluded that the best explanation for the student's observation is option b): Air has more moisture over tropical oceans than over cold oceans.