sound waves

• frequency x wavelength = speed
• wavelength is measured in meters
• speed is measured in m/s
• sound waves are longitudinal waves, meaning they compress and rarefy as they travel through a medium.
• frequency is measured in Hz (hertz)
• the amplitude of a sound wave determines its pitch
• increasing the amplitude of a sound wave will increase its volume
• sound waves form compressions and rarefractions
• rarefaction is when particles move farther apart
• compression is when particles get closer together
• pina's function is to capture and focus sound
• ear drum's function is to vibrate when the sound waves reach it
• ossicles's function is to carry and amplify vibrations
• cochlea's function is to generate electrical messages from vibrations
• auditory nerve's function is to carry electrical messages to the brain from the cochlea