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.
Iâd have to have looked this up, too, Emma! One of the interesting results of the differing speed of light and sound is that supersonic planes (travel faster than sound) are seen to fly past you first and you only hear the sound a few seconds later.