Earth science, geology: p-waves and s-waves
Tutoring earth science, p-waves and s-waves might arise. The tutor gives quick definitions. p-waves: compression waves …
earth science
Technology: how a metal detector works
The tutor gives a nontechnical explanation of how a metal detector functions. Watching Curse of Oak …
The Tectonic Plates: Floating Islands of Rock
Tutoring high school science, you might be asked about plate tectonics at any time. Here is the most …