Q109
General SciencePhysics
The heat of the sun reaches us by
- a.conduction.
- b.convection.
- c.radiation.
- d.None of the above
Answer: (C) radiation.
Solar heat reaches Earth through radiation — specifically electromagnetic radiation (infrared, visible, and UV). Conduction requires direct contact between materials; convection requires a fluid medium. Space is essentially a vacuum, so only radiation can transmit energy across it.