A plasma is an ionized gas. A plasma is a very good conductor of
electricity and is affected by magnetic fields.Plasmas, like gases have an
indefinite shape and an indefinite volume.
The Sun is an
to externally imposed fields, such as the Earth's magnetic
field or the interplanetary magnetic field, the plasma is acted
upon by electric and magnetic fields created within the
plasma itself through localized charge concentrations and
electric currents that result from the differential motion of
the ions and electrons. The forces exerted by these fields on
the charged particles that make up the plasma act over long
distances and impart to the particles' behavior a coherent,
collective quality that neutral gases do not display.