Question

How does the motion of particles in the sun’s plasma compare to the motion of particles in a solid?
Particles in both the plasma and a solid move around to fill available space.
Particles in the plasma move randomly, but particles in a solid vibrate in one place.
Particles in the plasma have low kinetic energy, but particles in a solid have high kinetic energy.
Particles in both the plasma and a solid are made up of fast-moving electrons and cations.

Answer 1

The second statement is correct.

In a plasma (like the Sun’s) the particles — free ions and electrons — move freely and randomly with high kinetic energy. In a solid the atoms/ions are held in a lattice and only vibrate about fixed positions rather than moving to fill space.