Light is a type of energy, and it moves very fast! It moves so quickly that when you turn on a light switch, you can’t even tell that the light from a lamp or light bulb has to travel to fill up a room.
It does travel though. Just like an ocean wave, it takes time for the energy to get from one place to another. In the case of light, it travels over 186,000 miles in a second! That number of miles is a bit large to even imagine, but that means the energy of light could loop around the Earth seven times in about as long as it takes you to say, “Mississippi.”