a) Beneath the crust lies the ? , primarily composed of ? rock.
b) At the center of the Earth lies the ? , primarily composed of molten i ? and n? .
Radioactive decay of u ? , t ? , and p ? is the main source of Earth's interior heat.
Molten rock is called ? while underground and ? above ground when it pours forth from a ? .
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Which of the following is a piece of evidence in favor of the theories of plate tectonics and continental drift? Select all that apply!
The ridges formed by the spreading of the seafloors.
The Moon's plates can be observed in motion.
The shapes of the continents make it appear as if they could fit together.
There are fossils of ancient animals found on completely different continents separated by huge oceans.
The mountains formed by the collisions of plates.
5, a) Mantle(its layers include: lithosphere-directly beneath crust, and asthenosphere), peridotite rocks b) Inner... View the full answer