Question

1. what is an electromagnetic wave? a longitudinal disturbance through a medium a wave that vibrates surrounding matter to transmit energy a sound pulse sent through the air a wave that oscillates a charge to transmit energy

Explanation:

Electromagnetic waves are formed by oscillating electric and magnetic fields. They do not require a medium (unlike longitudinal waves or sound which need matter/vibrations in a medium). They transmit energy through the oscillation of charges (as per Maxwell's equations where changing electric fields create magnetic fields and vice - versa, forming a wave that can propagate through space).

Answer:

a wave that oscillates a charge to transmit energy