Question

If the temperature of the earth's layers increases by about 90 degrees fahrenheit for every 1 mile from the surface and you are estimating the temperature of a point in the mantle 90 miles below the surface, how hot would the mantle be at that depth?

Answer 1

Answer:

27,900°F

Explanation:

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Answer 2

The rate of change of the temperature of the Earth's surface is given to,
                                       90°F/mile
To determine the temperature x miles away from the surface, we multiply the depth by the given rate. This will give us the answer of,
                                  T = (90°F/mile)(90 mile)
                                      = 8100°F
Thus, the temperature 90 miles deep in the Earth's surface is equal to 8100°F.