Yes, it travels in waves, but it doesn't need a medium.
No. light waves required no medium for transmission.
No medium is required by electromagnetic waves to traverse.
Light energy travels in the form of electromagnetic waves, which do not require a medium to propagate. These waves consist of oscillating electric and magnetic fields that move through space at the speed of light.
No, light travels in electromagnetic waves, not compression waves. Compression waves are associated with sound waves, where particles are compressed and expanded as the wave passes through a medium. In contrast, electromagnetic waves do not require a medium to travel and propagate through oscillating electric and magnetic fields.
A wave travels through a medium as a disturbance. Waves can be mechanical (such as sound waves) or electromagnetic (such as light waves) and they transfer energy without transporting matter.
Sound is a form of energy that travels "through" a mechanical medium. Light can be modelled as waves in certain circumstances. No mechanical medium is detectable, so either there is no medium, or the medium also propagates all matter the same way (Lorentz aether). The photoelectric effect shows that, just like sound is just motions of particles, so is light. electromagnetic
longitudinal waves
I assume you are thinking about a "medium". If a wave travels through some "substance", such a substances is called a medium. In the case of light waves, or electromagnetic waves in general, the medium is empty space - nothing is required to fill the space.
Both light and sound travel. Light travels the fastest.
Light travels in waves, and sound travels in waves. However, sound waves and light waves are very different, and it is important not to confuse the two. Light travels in electromagnetic waves, and sound does not. Sound waves are caused by vibration.
They dont need it, but they can use it
A medium is a material through which a wave travels. These can include solids, liquids, and gases. However, some waves, like light waves, can also travel through a vacuum.