蜜芽传媒

A discussion about heat energy and friction, using meteors as an example. Although most meteors are very small, they travel at great speed and have a large amount of kinetic energy. As they enter the Earth's atmosphere, they transfer kinetic energy to heat by friction. As they heat up, some of the energy is changed to light energy, forming the appearance of a shooting star. There is also an explanation of how a material transfers heat through the vibration of particles.