____ and ____ circulation redistribute this energy, maintaining the global energy balance.

• A. Atmospheric; Oceanic
• B. Solar; Tectonic
• C. Hydrospheric; Lithospheric
• D. Volcanic; Tectonic

Answer: (A)

Heat distribution by atmospheric and oceanic circulation keeps the global energy balance in check. The sun heats the equator more than the poles, so to avoid extreme warming at low latitudes and cooling at high latitudes, heat needs to be moved around the globe. The atmosphere carries heat through wind patterns—think of tropical air rising, moving toward the poles, and returning as cooler air flows. The oceans contribute even more, with warm surface currents like the Gulf Stream transferring heat poleward, while deeper, cooler waters circulate back toward the equator. This combined transport smooths out temperature differences and helps stabilize climates worldwide. The other ideas involve energy sources or internal Earth processes rather than the large-scale, cross-planet heat movement that maintains energy balance.