convection zone

1. A region of turbulent plasma between a star's core and its visible photosphere at the surface, through which energy is transferred by convection. In the convection zone, hot plasma rises, cools as it nears the surface, and falls to be heated and rise again.

Example Sentences

This boiling region is called the "convection zone," where layers and plumes of plasma roil and flow.

From Science Daily

The convection zone comprises the top one-third of the sun's radius and stretches about 200,000 kilometers below the surface.

From Science Daily

"People had thought that the sun's magnetic field is created by the motions at the very bottom of the convection zone."

From Science Daily

In addition, in past years advances in helioseismology, i.e. probing the solar interior with the help of solar acoustic waves, have established that this rotational profile is nearly constant throughout the entire convection zone.

From Science Daily

But experts agree on one thing: It probably begins in the convection zone, just below the photosphere.

From Scientific American