The term SUN BEAMS can be summarized as RAYS of light emitted from the sun. The crossword solution for this term is RAYS, which is a four letter word. RAYS are a form of electromagnetic radiation that are emitted from the sun and travel in straight lines in all directions. They are composed of photons, which are particles of energy that carry light and heat. Sun beams are responsible for providing us with light and warmth, and are essential to life on Earth.