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Chapter 3: Water Refraction

Water Refraction in Physics

In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.

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Grade 4: Chemical Reaction | Water Volcano

Have you ever see Water Volcano?

Water Volcano. The mixing of the vinegar and baking soda produce a volcano like foam. The answer? The mixing of the vinegar and baking soda produce acid-base reactant. The reaction creates carbon dioxide gas that bubbles up from the mixture. This trick is the perfect rainy day activity for all ages (adults too!). The possibilities are endless – so grab a glass of water and start making magic!