Elem Chem/Phys 9
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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Sound | A vibration.
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Sound Wave | A moving vibration when you talk.
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Echo | A Sound you hear twice.
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To Conduct | Means to lead something from one place to another.
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Mach 1 | We would say sound travels about 760 miles per hour this is called Mach 1.
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Supersonic speed | When something travels faster than 760 miles an hour it is called super sonic speed.
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Infrasound | When a sound is to low for our ears to hear
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Ultrasound | When a sound to high for us to hear
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Pitch | How we describe the sound we are hearing.
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Timbre | We call the quality of sound timbre.
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Amplitude | The height of a sound wave.
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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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