An old movie poster used a quote "In space, no one can hear you scream!" Which of these best explains this quote? A) The quote is incorrect, you can hear sound in outer space. B) Sound cannot be polarized. So, you cannot hear sound in space. C) Sound is an electromagnetic wave and needs no medium to travel through. D) Sound needs a medium for the wave to vibrate and there is nothing in space to vibrate.
Sound does need a medium to travel. Sound is a result of the vibration of molecules. On earth sound travels through the vibration of air molecules. In space, there is no medium for sound to travel.