10-2 The Chromosphere Flashcards
1
Q
the chromosphere
A
An incandescent, transparent layer of gas, primarily hydrogen, several thousand miles in depth, lying above and surrounding the photosphere of a star, but distinctly separate from the corona
2
Q
how thick is the chromosphere
A
2000 km thick
3
Q
solar granulation
A
the sun’s surface has granules which measure 1000 km across. they are convection cells in the sun’s photosphere which appear and disappear in minutes; at any moment there are millions of granules. gas rising upward produces the bright granules. cooler gas sinks downward along the darker, cooler boundaries between granules
4
Q
spicules
A
a spicule is a jet of gas that surges upward into the sun’s outer atmosphere.
