Question

question 7
1 pts
the suns surface churns with a bubbling pattern called granulation. why?
the suns surface is boiling.
the pattern is created by strong magnetic fields.
the churning gas is being stirred up by the strong solar wind.
we are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface.
the churning is an illusion created by varying radiation, as the gas on the suns surface is actually quite still.

Explanation:

Granulation on the Sun's surface is caused by convection. Hot gas (plasma) rises from below the surface (appearing as bright granules) and cooler gas sinks back down (the darker regions between granules). The Sun's surface isn't boiling in the traditional liquid - boiling sense. Strong magnetic fields are more associated with sunspots and other solar features like prominences. The solar wind is a stream of charged particles that flows outward from the Sun and isn't the cause of granulation. And the gas on the Sun's surface is not still; it is in constant motion due to convection.

Answer:

We are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface.