1) The document discusses the properties and behavior of light, including that light carries energy as an electromagnetic wave. It travels in straight lines called rays. 2) When light hits an object, it can be absorbed, reflected, or pass through. Reflection is when light bounces off an object and into our eyes, allowing us to see things. 3) Visible light is a small part of the electromagnetic spectrum. Different colors are wavelengths of light, with blue having a higher frequency than red. The color we see is determined by the wavelengths reflected by an object.