7th grade Vocab for 'Waves'
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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| Wave | A disturbance that moves through matter or space
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| Transverse Wave | Particles in matter move up and down at right angles in the direction the wave travels
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| Compressional Wave | Particles in matter move back and forth along the same direction in which the wave travels
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| Wavelength | Length of a wave; measured from crest to crest
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| Frequency | The number of wavelengths that pass by a point each second
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| Law of Reflection | The angle that the wave hits a reflective surface, it'll bounce back the same
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| Refraction | The change in direction of a wave when it changes speed as it travels from one material to another
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| Diffraction | When waves bend and change direction and instead go around obstacles
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| Opaque | Materials let no light pass through
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| Translucent | Materials absorb some light but also reflect some
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| Transparent | Materials let almost all light through
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| Reflect | When light bounces right off the material
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| Absorb | When light gets taken into the material
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| Transmit | When light goes right through the material
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| Loudness | Volume; the magnitude of sound
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| Pitch | Frequency; when a wave has a low frequency it has a low pitch
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| Echolocation | The location of objects by reflected sound
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| Echo | A sound or series of sounds caused by the reflection of sound waves from a surface back to the listener
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| Doppler Effect | An increase/decrease in the frequency of sound, light, or other waves
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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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