Define and identify sound waves, energy, etc.
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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| Pitch | Perception of the frequency of a sound.
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| Acoustics | Study of how well sounds can be heard
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| Sonogram | Image formed by an ultrasound machine.
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| Intensity | Amount of energy per second carried through a unit area by a wave.
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| Noise | Mixture of sound waves with no pleasing timbre
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| Infrasound | frequencies below 20 hz.
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| Ultrasound | frequencies above 20,000 hz.
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| Beats | Regular changes in loudness of a sound when two sounds of different frequencies are played together.
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| Loudness | Perception of the intensity of sound.
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| Decibels | Unit of measurement of loudness.
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| Timbre | quality of sound.
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| Sonar | System of detecting reflected sound waves.
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| Dissonance | Sound produces when notes that have no musical relationship are played together.
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| Density | Ratio of the mass of substance to its volume.
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| Larynx | Two folds of tissue that make up the human voice box.
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| Doppler effect | apparent change in frequency of a sound as the source moves in relation to the listener.
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| Echolocation | use of reflection of sound waves to navigate and to locate prey.
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| Music | Set of tones and overtones combined in ways that are pleasing to the ear.
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| Elasticity | Ability of a material to bounce back after being disturbed.
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| Resonance | Increase in the amplitude of vibration that occurs when external vibrations match the objects natural frequency.
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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.
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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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