What is sound?
Q: What is sound?
A: Sound is a type of wave created by vibrations of molecules. It can be heard when it goes through a medium to the ear.
Q: How are sounds made?
A: Sounds are made by vibrations of molecules. For example, when someone hits a drum or cymbal, the object vibrates and makes air molecules move which creates sound waves.
Q: What are the three different mediums that sound travels through?
A: The three different mediums that sound travels through are solids, liquids, and gas.
Q: What causes sound waves?
A: Sound waves are caused by vibrations of molecules in the air. When an object vibrates, it creates air molecules to move which then create sound waves.
Q: How do we hear sounds?
A: We hear sounds when the vibrating air molecules reach our ears and cause our eardrum to vibrate in the same way as the object that started the sound wave did originally.
Q: Are all sounds regular vibrations?
A: No, not all sounds are regular vibrations; irregular vibrations make up noise while people can make very complex sounds for speech.
Q: What is compression and rarefaction in terms of sound waves?
A: Compression is part of a sound wave where air molecules are pushed together while rarefaction is part of a wave where air molecules are far away from each other - these two parts create a sequence known as a sound wave.
