Question

a comparison often made between solids and plasmas is based on their densities. how would you describe the density of a plasma?
☑ low density
○ high density
✖ varying density
○ similar density to a solid
complete
how would you describe the kinetic energy of the particles in a solid?
○ low kinetic energy
○ high kinetic energy
○ same kinetic energy as a plasma
○ varying kinetic energy
done ☑

Explanation:

For the first question (density of plasma):

Plasmas are ionized gases with particles spread out, so they have low density compared to solids (which have closely packed particles). The correct option is the one marked with a check (low density), and the crossed option (varying density) is incorrect as plasma density is generally low (not varying in the context of comparing to solids).

In a solid, particles are closely packed and vibrate in fixed positions, so they have low kinetic energy (compared to plasmas where particles move rapidly). So the correct option is "low kinetic energy".

Answer:

• Correct: low density (the option with the checkmark)
• Incorrect (crossed): varying density

For the second question (kinetic energy of particles in a solid):