A solar plage is a bright region in the chromosphere of the Sun, typically found in regions around sunspots. They appear bright in images taken in the light of hydrogen alpha (Hα) and are associated with concentrations of magnetic field lines. Plages are often precursors to sunspot formation and are indicators of solar activity.

Solved

A Solar Plage Is a

Question 143

Multiple Choice

A solar plage is a

A) cooler region of the photosphere surrounding the very cold central region of a sunspot.
B) brightening of a portion of the Sun in light from hydrogen and other atomic species, appearing just before sunspots.
C) "hole" in the hot corona through which solar wind escapes into interplanetary space.
D) gigantic loop of gas, lifted by magnetic fields above the solar surface, appearing dark against the photosphere and bright against dark space.

Correct Answer: