3.3
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 of____. | 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 in the wind, the flag ripples back and forth as the energy ____ along the flag. | travels
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| A ____ wave travels only though matter. | mechanical
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| An ____ 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 that makes the particles of a medium move back and forth parallel to 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 waves, water particles move in ____. | circles
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| The ____ of a wav is the distance from one point, such as the crest. | wavelength
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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 ____. | 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. | amplitude.
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| When you knock on one side of a door, the sound travels as ____ 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. | absorbs
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| They increase their motion, changing to ____ energy. | thermal
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| This causes a ____ in the sound. | decrease
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| Some of the energy of your knock bounces, or ____ back into the room. | reflects
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| That is why you ____ the sound. | hear
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| Waves that bounce off the surface follow the law of ____. | reflection
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| ____is the change in direction of a wave as it changes speed. | Refraction
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| When entering a medium, waves refract toward the normal if they____. | slow down
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| The change in direction of a wave when it travels past the edge an object or through an opening is called ____. | diffraction
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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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