7.If you could drill a hole straight to the center of the Earth, and keep track of what the hole is going through, you would find:
A) You would go through one sort of material, and then a different, denser material, and then a still-different, still-denser material, because the planet is made of concentric layers, sort of like an onion. B) You would go through one sort of material all the way to the center, because the planet is all mixed up.C) If your hole started at the North Pole, you would go through different layers of different materials, but if your hole started at the equator, you would go through one sort of material all the way to the center.
D) If your hole started at the equator, you would go through different layers of different materials, but if your hole started at the North Pole, you would go through one sort of material all the way to the center. E) You would strike Diet Pepsi when you got to the center.Feedback: The planet is onion-like, with an inner core, then an outer core, a mantle (which has several sub-layers), and a crust. The core is waaaaay too hot and high-pressure for Diet Pepsi.Correct Answer(s):A
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8.The Earth has a fascinating history, which this class has just begun to explore. Which is more nearly correct, according to the scientific interpretation presented in the text?
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