4th Grade Sound Waves

We’re looking at sound waves in 4th grade today. We’ll be doing a demonstration with a large set of speakers and a slow motion camera. Before that, we’ll look at some resources that will help us understand what sound waves are.

Some vocabulary that will be useful:

source: https://sound-waves-and-frequency.weebly.com/

These first resources will help demonstrate that sound has energy, and that waves radiate out from the sources of the noise.

Now we’ll look at a couple of simulations that will show us how waves travel.

PHET String Wave Simulator
PHET Waves Intro

Finally, we’ll do a demonstration with the large speaker to see what different wavelengths / frequency of sound looks like in motion.

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