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Solar energy is transmitted to Earth surface through :

  • A.Conduction
  • B.Radiation
  • C.Convection
  • D.Advection

Answer: B

Solar energy reaches the Earth's surface by radiation.

Space between the Sun and the Earth is nearly a vacuum, and only electromagnetic radiation can cross a vacuum. Sunlight travels as shortwave radiation through space and through the atmosphere, which is largely transparent to it, before being absorbed at the surface.

Conduction needs direct contact between molecules and only transfers heat from the surface to the air in contact with it. Convection is transfer by vertical movement of a heated fluid, and advection is horizontal transfer by moving air or water. These redistribute heat within the atmosphere but cannot carry energy from the Sun.

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