unit 4 science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| stringed instrument | an instrument with one or more strings
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| wind instruments | an instrument made of a hollow tube through which air can flow
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| percussion instruments | an instrument that produces a musical sound when hit
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| sound source | an object that produces sound
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| sound reciever | an object that can detect or hear sounds
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| decibel | unit of measurement of sound intensity
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| pitch | how high or low a sound is
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| volume | how loud or soft a sound is
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| intensity | how strongly or softly a sound vibrates
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| frequency | the number of vibrations in one second
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| pinna | the visible part of the ear
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| auditory canal | the tube through which sound travels to the eardrum
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| ear drum (tympanic membrain) | a thin membrane that vibrates she sound waves reaches it
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| hammer (malleus) | a tiny bone that passes vibrations from the ear drum to the anvil
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| anvil (incus) | a tiny bone that passes vibrations from the hammer to the stirrup
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| stirrup (stapes) | a tiny, u shaped bone that passes vibrations from the anvil to the cochlea
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| cochlea | a snail shaped, fluid filled inner ear structural it is lined with cilia (tiny hairs) that move then vibrated and cause a nerve impulse to form (brain signals)
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| auditory nerve | these carry electro-chemical signals from the inner ear (cochlea) to the brain
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| semi-circular canals | three loops of fluid-filled tubes that are attached to the cochlea in the inner ear. they help us maintain our sense of balance.
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| eustachian tube | a tube that connects the middle ear to the back of the nose; it equalizes the pressure between the middle ear and the air outside. when you pop your ears as you are changing altitude (going up a mountain or in an airplane)you are equalizing the psi.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
hynesgang05
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