Time Math - The Bray Way (Gazdonian Productions video https://youtu.be/EVebroSVas8)
Visualizing P Wave and S Wave Shadow Zones on Earth (Gazdonian Productions video: https://youtu.be/JJD3ubkPivQ)
How to find the epicenter of an earthquake (video: https://youtu.be/m087LO9bCX4)
Convection currents are the force behind plate tectonics. Video: https://youtu.be/ryrXAGY1dmE
How Divergent plate boundaries work. Video: https://youtu.be/uSKzdbEVsI8
How convergent plate boundaries work. Video: https://youtu.be/Wt_jJUnTFhg
Seismic waves overview (video: https://vimeo.com/69909087)
Magnetic reversals. Note: the concept of how this works can be tricky for students. Pay close attention to how these form. Video: https://youtu.be/WhiF6IqGACo
Ocean crust magnetic "stripe" animation. Again, this concept can be challenging. Try hard to understand how this works. video: https://youtu.be/YIAXiE8RedA
Plate Tectonics: https://youtu.be/ZTRu620bIsE
Convergent plate boundaries: https://youtu.be/JQDA_kZNFJs
How to find epicenter of an earthquake: https://youtu.be/3eFS4WhsrHA
ESRT page 10 Earth's Interior Overview (https://youtu.be/ZkaDvzGGspM)