Behaviors of Sound
What a pillow does to sound when you cover your ears
What is absorb?
Choose the correct answer: a dog hears higher or lower pitches than humans
What is higher?
this refers to how high or low a sound is
What is pitch?
this is a membrane between the outer ear and the middle ear that vibrates when sound waves hit it
What is the eardrum?
To allow sound to pass through
What is transmit?
energy in the form of vibrations that can be heard
What is sound?
the measure of loudness of sounds
What is decibels?
these are the three small bones in the middle ear that pass vibrations along to the inner ear
When an echo bounces back off of a cliff
What is reflection?
sound that causes pain or is annoying
What is noise?
the distance from a point on one wave to the same point on the next wave
What is wavelength?
this is a part of the outer ear that collects sound waves and passes them to the eardrum
What is the ear canal?
When you hear someone talking around a corner, or from another room
What is diffraction?
rapid back and forth movements in matter
What is vibration?
this is what you wear if you work around loud machines, such as airplanes or lawnmowers
What is ear protection?
this is the part of the inner ear that turns vibrations into nerve messages, which it passes to the auditory nerve
What is the cochlea?
What is refraction?
the name for how many sound waves pass a certain point in a certain amount of time
What is frequency?
this is the measure of frequency of sound
What is hertz?
this carries messages about sound to the brain
What is the auditory nerve?