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
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s are known as compression waves.
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In this video, we explore the science behind why we see fireworks before we hear them, and how the speed of light and sound play a role in this. We also conduct experiments to understand how sound travels through different mediums, and...

Upon viewing the What is Sound video series, students will be able to do the following: Understand that sound is produced when matter vibrates. Explain that sound energy can travel through air, liquids, and solids, which are generally...