Light and Sound Ch 2
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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| vibration | the complete back-and-forth motion of an object
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| sound wave | a longitudinal wave caused by vibrations
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| cochlea | part of the inner ear that changes vibrations into electical signals sent to the brain
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| eardrum | a membrane that is the entrance to the middle ear
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| pitch | a measure of how high or low a sound seems to be
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| Doppler effect | the observed change in frequency of a wave when the source or observer is moving
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| decibel | the most common unit used to measure loudness
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| echo | a reflected sound wave
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| interference | the combination of two or more waves that results in a single wave
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| noise | any sound that is a random mix of frequencies or pitches
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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:
mwalstro
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