Yeah... I know many of you people might be laughing but still I don't understand how can we simply reach the conclusion that increasing temperature increases the atomic motion. Consider this : When we push something, it moves (don't over think about this one) when we apply torque on something, it rotates, though it's generally accepted but still its absurd to me that increasing temperature increases the atomic motion. One may say that: " By conservation of energy, we can say that the energy supplied by the increase in temperature equals to the kinetic energy of the particles " But this doesn't just satisfy me. Does anyone else has another explanation?