Sound
energy that can pass through a solid, liquid or air.
What is sound?
The loudness or softness of a sound.
What is volume?
Sound is made by?
What are vibrations?
To decrease the volume of sound.
What is sound proofing?
The nerve that sends signals about what you hear from your inner ear to your brain
What is the Auditory Nerve?
Sounds that do not hurt your ears?
What are pleasant sounds?
The unit used to measure the loudness and intensity of sound.
What is Decibel (dB)?
Movements back and forth or up and down that create a sound
What are vibrations?
To increase the volume of sound.
What is Amplifying Sound?
A piece of skin inside your ear that is stretched tight like the skin of a drum
What is the Ear Drum?
noise (any sound that is considered unwanted, unpleasant or too loud), sound waves that have no smooth pattern
What is Unpleasant Sounds
The highness or lowness of a sound
What is pitch?
One full wave movement, such as from the crest of one wave to the crest of the next wave
What is a wave length?
The bouncing or reflection of a sound wave from a surface
What is an echo?
Inside the ear is a coiled tube called the cochlea and it is filled with fluid and nerve endings
What is the Inner Ear?
Unable to hear sounds
What is Deaf?
The number of sound vibrations per second
What is frequency?
A funnel or cone shaped device for amplifying sound or directing sound.
What is a megaphone?
Also known as the pinna, this is the visible part of the ear which is made up of skin and cartilage.
What is the Outer Ear?
Sound travels in ______.
What is waves?
One full wave movement, such as from the crest of one wave to the crest of the next wave
What is Wave Length?
The smaller the vibration wave(less energy) the _____ the sound is.
Short, small objects vibrate ______ than long, large objects.
What is faster?
Three tiny bones (hammer, anvil, stirrup) that form a bridge between the eardrum and the inner ear
What is the Middle Ear?