Physical Science Lesson 7: Sound
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 form of energy produced by vibrating objects
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Sound Wave | A wave that transmits sound
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Vibrate: | Move back and forth rapidly
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Frequency | The rate at which a vibration occurs that constitutes a sound wave
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Sonar | A technique that uses sound waves to navigate and locate items under water
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Decibels | The unit used to measure the intensity of a sound
The degree of loudness
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Pitch | The degree of highness or lowness of a tone
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Echo | A sound caused by the reflection of sound waves from a surface
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Doppler | The apparent change in frequency and wavelength of a wave, such as 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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Created by:
twaller
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