It is because you are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface of the sun.
The rock that churns deep beneath the Earth's surface is called "magma." It is a molten rock material that is located beneath the Earth's crust and can eventually rise to the surface as lava through volcanic eruptions.
churns is 3rd person singular present, plural of churn
The Southern part of the Nile river churns with cataracts.
The stomach churns food and then passes it to the small intestine.
death
my balls
I think it is the stomach
Milk was collected in milk 'churns'.
The stomach.
In the stomach, where is churns around and sights food.
It is called Peristalsis.
That would be the stomach, and possibly the intestines.