Multiple choice

Heat from the sun reaches earth by the process of

  1. Conduction

  2. Convection

  3. Radiation

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar heat reaches Earth primarily through radiation across the vacuum of space. Minor conduction occurs in the atmosphere, and atmospheric convection currents distribute heat. Since all three processes contribute to varying degrees, Option D is technically correct. Radiation is the dominant mechanism.

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