Solid Particle Kinetic Energy Increase with Temperature

Temperature is a direct measure of the average kinetic energy of the particles within a substance. In solids, particles are held in fixed positions and primarily exhibit vibrational motion.

• When the temperature of a solid is increased, thermal energy is added to the system.
• This added energy causes the particles to vibrate more vigorously around their fixed positions.
• The increased amplitude and frequency of these vibrations correspond directly to an increase in the particles' average kinetic energy.

Therefore, increasing the temperature of a solid leads to an increase in the kinetic energy of its particles.

Final Answer: The final answer is Kinetic energy increases.