How do ocean currents affect climate?

• A. They directly heat the land.
• B. Ocean currents influence the temperature of air that moves over land, warming or cooling the climate.
• C. They have no effect on climate.
• D. They determine precipitation exclusively.

Answer: (B)

Ocean currents move heat around the globe, and that heat changes the air temperature above the sea. When air moves from the ocean to land, it carries this warmth or coolness with it, warming or cooling the climate of nearby regions. Warm currents make coastal areas milder and more humid, while cold currents cool the air and can lead to cooler, drier conditions. Precipitation patterns are also affected because warmer air can hold more moisture and cooler air holds less, influencing nearby rainfall.

So the best view is that currents influence the temperature of air that moves over land, warming or cooling the climate. They don’t directly heat land, they don’t have no effect, and they don’t control precipitation exclusively—their role is to modulate air temperature and related climate patterns.