(In response to this leaf from user pyerxa!)
Class Demo/Investigation Suggestion
Set up a glass baking dish with water. Drop a pebble. Have class make observations and time how long for the first wave to reach the side of the container. Then use a cornstarch water mixture and repeat the pebble drop.
Explanations on earthquake waves and demos of sound waves in water and cornstarch:
- Khan Academy: https://www.youtube.com/watch?v=KL0i1RSnpfI
- Cornstarch and Soundwaves: https://www.youtube.com/watch?v=3zoTKXXNQIU
- Water and Soundwaves: https://www.youtube.com/watch?v=THUMdTohWkI
- Observe Waves by Controlling Density: http://aspire.cosmic-ray.org/Labs/SeismicWaves/
- Interior of the Earth: https://www.classzone.com/books/earth_science/terc/content/visualization...
- P vs S Waves: https://www.classzone.com/books/earth_science/terc/content/visualization...
Here are a couple of other sites that offer simulations that address a wider variety of science phenomena and incorporate NGSS modeling: