6: Working Out the Core
Today, we'll learn how deep humans have traveled into the planet, and how we know what's even deeper down. We'll meet mineral oozes, coils of liquid iron, and a Danish woman from the 1930s who discovered the center of the Earth.
Extra credit: Make a tin-can telephone, find an inductor in one of your electric appliances, or look for an aurora.
2022-03-01
17 min
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