Vibrations with lots of energy produce big waves and make loud sounds. So, banging a drum harder will produce a louder sound. Sound waves lose energy as they travel, which means that the further you are from a sound, the quieter it will be.
Rustling leaves
When leaves brush against one other, they produce tiny vibrations in the air. These vibrations only have a small amount of energy, so the rustling sound is very quiet.
Roaring lion
A lion’s roar causes the surrounding air to vibrate with lots of energy. It produces a loud sound, which can be heard up to 8 km (5 miles) away.
Rocket launch
When a rocket launches, the exploding gases produce huge amounts of sound energy. The noise is louder than 10 million rock bands performing at once!
Picture Credit : Google
