Which change would you expect to observe as you travel from 15°S latitude to

As you travel from 15°S latitude to 15°N latitude, you would expect to observe the direction of air currents changing. This is primarily due to the Coriolis effect, which causes moving air and water to turn and twist as they travel across the Earth, leading to different patterns of wind depending on the hemisphere.

In the tropics, this is particularly noticeable as trade winds blow from east to west near the equator. Therefore, as you move from the Southern Hemisphere to the Northern Hemisphere, the direction of the prevailing trade winds would shift from a southeast direction to a northeast direction.