MacMillan F12.2
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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| The part of the sound wave with many particles pushed together | compression
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| The part of the sound wave with few particles | rarefaction
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| A series of rarefactions and compressions traveling through a substance | sound wave
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| The substance through which the wave travels | medium
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| A region that contains few or no particles | vacuum
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| The transfer of energy when a wave disappears into a surface | absorption
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| When sound waves hit a flat, firm surface and much of the energy bounces back | echo
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| The number of times an object vibrates per second | frequency
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| How high or low a sound is | pitch
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| A change in frequency due to moving away or toward a wave | Doppler effect
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| The height of a sound wave | ampitude
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| Finding food or other objects using sounds and the returning echoes | echolocation
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| Sound Navigation and Ranging; a system scientists developed using sound waves to find things underwater | sonar
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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:
marian5
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