Final answer:
Sunlight includes a mix of electromagnetic radiation, with visible light perceived as rainbow colors and invisible ultraviolet and infrared light also present.
Step-by-step explanation:
The sunlight that reaches Earth is composed of a mixture of different types of electromagnetic radiation. This radiation includes not only visible light, which we perceive as the colors of the rainbow, but also ultraviolet (UV) and infrared (IR) radiation. The visible spectrum consists of the colors red, orange, yellow, green, blue, and violet, and sometimes indigo, each corresponding to different wavelengths. Sunlight is often considered white light because it is a combination of all the wavelengths in the visible spectrum. However, the sun also emits UV and IR radiation, both of which are invisible to the human eye but are detectable by various technologies or organisms with different visual capabilities.