Sound Flashcards
Define trough
The bottom loop of a transverse wave
Define longitudinal
A longitudinal wave is made up of rarefactions and compressions it moves like a spring
Define amplitude
The distance between the middle line and the two peaks/crests or troughs. This is the volume
Give an example of a longitudinal wave in real life
A bell’s sound waves are longitudinal waves
Define compressions
Compressions on the close vibrations of a longitudinal wave
Define rarefactions
Further apart vibrations of a longitudinal wave
What happens when the soundwave hits a barrier?
The incident wave hits the barrier and the reflected ray reflects off the barrier
Define wavelength
The distance between two peaks/crests or troughs. It is the frequency or pitch
How are echoes produced
An echocardiogram is produced when the sound reflects off the surface and bounces back into your ear
Define peak/crest
The top loop of a transverse wave
Define transverse
A transverse wave moves up and down equally like snake, it’s made up of peaks and troughs
Give an example of a transverse wave in every day life
Guitar is in example of a transverse wave in every day life
What is an oscillation
And oscillation is how always news back-and-forth equally and is parallel to the direction of the wave
Explain why an ear and a microphone similar
The ear and the microphone quite similar cos the microphone has a diaphragm which is like an eardrum it also produces electrical signal just like how the ear does
How do we hear
The soundwave enters our pinna and then goes down the ear canal to the ossicles which are - the anvil,hammer and stirrup to vibrate. This makes the hairs in the cochlea vibrate which then sends the vibrations down the auditory nerve to our brain.
