What term describes the total solar energy received by Earth during a period and the total heat lost by reflection and radiation in the same period?

• A. Geographical Equator
• B. Intertropical Convergence Zone
• C. Heat Budget
• D. Hadley Cell

Answer: (C)

The main idea here is the Earth's energy budget—the balance of energy entering and leaving the planet over a given period. The term describes the total solar energy Earth receives during a period and the total heat it loses by reflection (albedo) and radiation in that same period. In a stable budget, incoming energy equals outgoing energy, so the overall energy storage doesn’t change. If more energy comes in than goes out, the planet warms; if more goes out, it cools. The other terms refer to locations or atmospheric circulation patterns, not the accounting of energy entering and leaving the Earth system.