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Why is the center of the Earth still hot?
Hi, Matt:
I was wondering why the interior of the earth is still red hot. It would seem that after four billion years, it would have cooled off by now.
-- CH, San Diego
Pick one: (A) Earth's core is a solid moon-sized ball of iron spinning in an envelope of roiling, gushing molten iron, which remains molten because of the heat of radioactive decay and pressure, all a mere 25 miles under our feet; or (B) The center of the earth is made of pizza cheese, which, as everyone knows, never cools off.
Here's something you might be interested in.
Why is the center of the Earth still hot?
Why is the center of the Earth still hot?
Hi, Matt:
I was wondering why the interior of the earth is still red hot. It would seem that after four billion years, it would have cooled off by now.
-- CH, San Diego
Pick one: (A) Earth's core is a solid moon-sized ball of iron spinning in an envelope of roiling, gushing molten iron, which remains molten because of the heat of radioactive decay and pressure, all a mere 25 miles under our feet; or (B) The center of the earth is made of pizza cheese, which, as everyone knows, never cools off.
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