299,792,458 meters/second
Light energy consists of electromagnetic waves that travel at the speed of light, while sound energy consists of mechanical waves that travel at a much slower speed. Light energy does not require a medium to travel through, whereas sound energy does. Light energy can travel through a vacuum, whereas sound energy cannot.
It can travel through a vacuum.
(a) Electromagnetic waves; that includes light. (b) Gravity waves.
yes
Speed of light.
Quite simply, the two things - being "a form of energy" and travelling at a speed of light - are completely unrelated. There are other forms of energy that don't travel at all, like potential energy.
Light energy.
No, the speed of light in a vacuum is constant for all photons regardless of their energy. Higher energy photons have a higher frequency and shorter wavelength, but they still travel at the speed of light.
Energy from the sun to Earth travels as electromagnetic energy, or light energy.
299,792,458 meters/second
Yes. Yes it does
Light energy travels in the form of electromagnetic waves. These waves consist of electric and magnetic fields that oscillate perpendicular to each other and to the direction of travel.