RAS question
Kuroshio Current is a warm current in the:
Correct answer: (D) Pacific Ocean.
The Kuroshio Current, also called the Japan Current, is a warm current of the Pacific Ocean.
Explanation
Kuroshio is a warm current in the Pacific Ocean because it flows north-eastward along Japan and feeds the Kuroshio Extension in the North Pacific. NOAA's KEO Background page says the Kuroshio Current carries warm tropical water northward, while the Kuroshio Extension carries warm water eastward into the North Pacific. The Japan Current is the Pacific counterpart of the Gulf Stream: both are major warm currents, but Kuroshio belongs to the Pacific system, not the Atlantic, Indian, or Arctic Oceans. The ocean basin is the deciding geographical clue, so the answer is Pacific Ocean.
Why the other options are wrong
- (A) The Arctic Ocean is associated with cold currents, whereas Kuroshio is a warm current carrying tropical water northward.
- (B) The Atlantic Ocean has the Gulf Stream as its well-known warm current; Kuroshio is its Pacific equivalent.
- (C) The Indian Ocean is not the basin of Kuroshio or the Kuroshio Extension, which belong to the Pacific system.
Concept
Major ocean currents and their thermal character are core world geography concepts. They recur in RAS because ocean currents are a compact way to link physical geography, climate patterns, and map-based factual recall.