Definition of perk. intransitive verb. 1a : to thrust up the head, stretch out the neck, or carry the body in a bold or insolent mannerb : to stick up or out jauntily. 2 : to gain in vigor or cheerfulness especially after a period of weakness or depression âusually used with up he's perked up noticeably.
Quick Answer. Light travels at a considerably higher speed than sound. Light travels at a constant speed of 186,000 miles per second, but the speed of sound is only 761.2 mph.
1. The Big Bang itself expanded much faster than the speed of light. But this only means that nothing can go faster than light.. Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier. Therefore, empty space can certainly expand faster than light.