Sound is produced through the oscillation of pressure in the form of a traveling wave. Sound waves pass through solid, liquid or gas and depending on the frequency, it can be heard by organisms. Humans use their ears to sense sound. Humans are capable of hearing sounds in the frequencies between 12 Hz and 20 kHz. Other animals can hear beyond these ranges such as dogs. Modern societies created devices to record and play back sound in the form of music, television and telephone. Check out the videos below to study more about sound.
Videos
NASA video walking you through exhibitions showing you the science of sound.
Explains how sound waves move into the ear canal.
Sums up how our ears receive sound waves and transform it to what we hear.
Video collage about what we hear and the vibrations created by sound.
Games
Label the Ear - Diagram where students test their knowledge of the parts of the ear.
