What term refers to the low pressure belt near the equator that migrates seasonally?

What term refers to the low pressure belt near the equator that migrates seasonally?

• A. Lag phase
• B. ITCZ
• C. Island arc
• D. Leaching

Answer: (B)

The concept tested is the seasonal shift of a warm, low-pressure region near the equator where air rises and rainfall is heavy. This is the Intertropical Convergence Zone, ITCZ. It forms where the northeast and southeast trade winds meet, causing air to converge and rise, creating a belt of low pressure and intense rainfall. Because the Sun’s direct rays move between the Tropics of Cancer and Capricorn over the year, this zone follows the sun and migrates north and south seasonally, driving the wet tropical seasons and affecting rainfall patterns in many regions. The other terms don’t describe this atmospheric feature: lag phase is a biological growth concept, island arc is a geological feature related to subduction zones, and leaching is a soil chemical process.

The concept tested is the seasonal shift of a warm, low-pressure region near the equator where air rises and rainfall is heavy. This is the Intertropical Convergence Zone, ITCZ. It forms where the northeast and southeast trade winds meet, causing air to converge and rise, creating a belt of low pressure and intense rainfall. Because the Sun’s direct rays move between the Tropics of Cancer and Capricorn over the year, this zone follows the sun and migrates north and south seasonally, driving the wet tropical seasons and affecting rainfall patterns in many regions.

The other terms don’t describe this atmospheric feature: lag phase is a biological growth concept, island arc is a geological feature related to subduction zones, and leaching is a soil chemical process.