Apart from making the solar panels and other equipment to distribute the electrical energy, solar power does NOT casuse pollution. It will NOT run out for millions of years. Light is an electromagnetic disturbance. We can think of light as being made of tiny particles called photons, or we can think of it as being made of waves. Both models help us to understand how light behaves.
Light is reflected when it falls onto a shiny surface.
Light is refracted when it passes from one material into another, i.e. out of the air and into water or in and out of glass. Heat is caused by vibrations of the atoms and molecules of substances. The hotter the substance is, the faster the particles vibrate. Sound energy is the energy of vibrating particles in the air or even water. The sound travels in waves radiating out from the source of the sound.