Fun facts:

Sound did you knows

Did you know white cats with blue eyes are usually deaf
Did you know wind doesn’t make a sound until it blows against an object
Did you know there is no sound in space
Did you know sound travels 4.3 times faster through water than in air
Did you know to crack a whip the tip must be travelling faster than the speed of sound
Did you know dolphins can hear underwater sounds from 24km (15miles) away
Did you know most cows produce more milk when they listen to music
Did you know elephants communicate in sound waves below the frequency that humans can hear
Did you know sound travels 15 times faster through steel than air
Did you know a cat can keep purring while inhaling and exhaling
Did you know a whip makes a cracking sound because its tip moves faster than the speed of sound
Did you know sound travels 10 times faster through granite than air
Did you know dolphin's can detect underwater sounds from 24 km (15 miles) away
Did you know when baby polar bear cubs are born they cannot see or hear for their first month
Did you know akousticophobia is the fear of noises
Did you know melophobia is the fear of music
Did you know lion's can't roar until the age of 2