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 How fast sound travels (i.e. the speed of sound) depends on what medium it is traveling through. 2  The speed of sound is 340 meters per second in air while as the speed of sound is 1450 meters per second in water.e hear sounds because the vibrations created travel through the air to our ears. Notice that when people want to hear something better they often cup their hand around their ear. This is to help them catch the sound waves.