7th grade 3.1
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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| All waves begin with a source______. | energy
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| a ______ is a disturbance that transfers energy from one place to another. | wave
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| matter ______ transferred as a wave moves. | is not
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| when a flag waves int the wind, the flag ripples back and forth as the energy _________. | travels
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| a ______ wave travels only through matter. | mechanical
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| a _______ wave can travel through empty space or through matter. | electromagnetic
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| there are ________ types of wave motion. | three
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| a ________ wave is a wave in which the disturbance is perpendicular to the direction the wave travels. | transverse
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| a _______ wave is a wave that makes the particles of a medium move back and forth parallel tot the direction the wave travels. | longitudinal
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| two common waves in nature are water waves and ________ waves. | seismic
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| in water wave particles move in ________ indicating that these waves are a combination of transverse and longitudinal waves. | circles
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| _______ waves occur during an earthquake. | seismic
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| the ________ of a wave is the distance from one point, such as the crest, to the corresponding point on the next. | wave length
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| the _________ of a wave is the number of wavelengths that pass a point each second. | frequency
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| frequency is measured in_______ (Hz) ; the longer the wavelength, the lower the frequency. | Hertz
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| wave speed depends on the type of material, or ________, a wave travels through. | medium
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| the maximum distance a wave varies from its rest position is the ________ of the wave; the more a(n) mechanical wave has, the larger the wave's amplitude will be | amplitude
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| when you knock on one side of the door, the sound travels ________ sound waves through the door | longitudinal
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| these waves travel through the ______ that makes up the door to the air on the other side. | matter
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| the particles that make up the door _______ some of the sound energy. | transfer
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| some of the energy of your knock bounces, or ________, back into the room | reflects
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| waves that bounce off a surface follow the law of _______. | reflection
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| _______ is the change in direction as it changes speed. | refraction
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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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