This is a writing exercise for the student, and answers will vary.
Work Step by Step
Hey Keon, I finally found out the answer to a puzzle that has bugged people for centuries - what is light? It turns out it is a wave, but unlike water waves or sound waves, it doesn't require a medium, and can even travel through vacuum. Light is an electromagnetic wave, and it sustains itself. A changing electric field creates a changing magnetic field, and a changing magnetic field creates a changing electric field. The two fields carry themselves and each other along in this way, traveling at an incredible 299,792,458 m/s through outer space. That's what light is. Who knew?