Discover the Amazing World of Sound and How We Hear!
Discover what sound is and how it's made
Sound is all around us! But what exactly is it and how do we hear it?
Sound is a type of energy that travels through the air (and other materials) in waves. We can't see these waves, but our ears can detect them and our brain interprets them as sounds!
In space, no one can hear you scream! That's because space is mostly empty - there's no air for sound waves to travel through. Astronauts need radios to communicate!