Struggling very hard but it's not the ''Spell this or what is the definition''
You have to read a book, and then answer. It's very hard because I learn better when someone's with me or talking to me. Brainly doesn't always help because some of the answers are wrong. I've tried someone else helping me but they don't do what I do. It's K12, 6th grade
The electromagnetic wave is self propagating, what I mean by that is, an electric field generates a magnetic field at 90 degree phase angle, and the magnetic wave you get as a result generates the electric wave at the same phase angle. The interchange of electric to magnetic and vice versa continues and lets the electromagnetic waves to travel without any medium. Quite interesting, really!