A waveform in which the vibrations of the medium it is propagated through are in the same direction as the wave's travel.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...

Find out that sound waves always need a medium to travel through.
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Physical processes - Sound - How does


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Learning Points
Sound wav
e

s are known as compression waves.
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This live-action video program is about the word Sound Energy. The program is designed to reinforce and support a student's comprehension and retention of the word Sound Energy through use of video footage, photographs, diagrams and...

This video explains the basics of sound and how it is produced, transmitted, and perceived. Explore the physics of sound and acoustics. Acoustics is the study of mechanical waves and how they move through gas, liquids, and solids....