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Educational Videos, Lessons and Games for K-12 School Kids |
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HOME : Sound
Sound
Sound, a form of energy, is all around us. It stimulates our sense of hearing. Sound is a vibration that travels in waves, spreading outwards from the source of the sound. For humans, hearing is limited to frequencies between about 20 Hz and 20,000 Hz (20 kHz).
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Educational Videos, Quizzes and Games for Kids in Kindergarten, Elementary, Middle and High Schools.
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