Light and Sound

Blue Skies: Scattering of Light https://www.youtube.com/watch?v=0b1fqodmZJ0

label the ear https://www.wisc-online.com/learn/natural-science/life-science/ap1502/anatomy-of-the-ear

Parts of the eye and function https://www.youtube.com/watch?v=up1dqjdZZDw

Parts of the ear https://www.youtube.com/watch?v=p3Oy4lodZU4