Question 1
The solar constant is measured at
◦ the Sun's surface.
◦ the edge of the Sun's atmosphere.
◦ thermopause.
◦ sea level.
Question 2
The solar wind consists principally of
◦ neutral hydrogen and helium atoms.
◦ planetesimals.
◦ free neutrons.
◦ positively charged hydrogen nuclei and free electrons.