Which of the following is not a major factor in the variance of the solar constant, ?
PHYSICS · Single correct · IB Diploma Programme · Physics · The greenhouse effect · The greenhouse effect
Problem
Which of the following is not a major factor in the variance of the solar constant, S ?
(1) Variations in the distance from the Sun to the Earth
(2) Variations in the luminosity of the Sun during its 11-year cycle
(3) Variations in atmospheric cloud cover
(4) Occurrence and frequency of sunspots, solar flares and prominences