Vocabulary
What are vibrations?
Back and forth movement across a medium
How are pitch and frequency similar?
A high frequency sound wave has a high pitch, and a low frequency sound wave has a low pitch.
What is the Pinna?
The outer ear is called the pinna and is made of rigid cartilage covered by skin.
what are the 2 types of waves?
mechanical, electromagnetic
true or false
High frequency equals low pitch?
False
What is frequency
the number of waves that passes a given point per second.
What is loudness?
Loudness refers to how loud or soft a sound seems to a listener.
What is the cochlea?
spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations.
what are the 3 types of mechanical waves
transverse, longitudinal, surface
what can be done for someone who is born def to help them hear
cochlear implant
What is amplitude?
the height of the wave from the resting position.
What is a crest of the wave?
highpoint
What does the auditory canal do?
to transmit sound from the pinna to the eardrum.
what are electromagnetic waves
waves which need no medium to transfer energy
true or false
each string on a guitar has different thicknesses?
true
What is Sound?
vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
what is a trough of the wave
low point
What is an eardrum?
cone-shaped membrane that separates the external ear from the middle ear.
what causes waves
vibrations
what unit do we measure frequency in?
Hertz
What is Pitch?
the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone.
how do we measure wavelength?
space from crest to crest
What is the auditory nerve and what does it do?
The auditory nerve is a bundle of nerve fibers that carries hearing information between the cochlea and the brain.
true or false
sound waves are faster than light waves
False
who is the absolute best teacher?
Mrs. Frazier
GOT YA!