Mark studies rocks for a living. He is curious if rocks deeper in the Earth will be warmer or cooler. If Mark were to take the temperature of a rock that is half a mile into the Earth's surface, and then take the temperature of a rock 1 mile into the Earth's surface, he would find that the rock 1 mile into the Earth's temperature is
lower. higher
A B
Temperature increases with depth inside the Earth, so melting of rocks is more likely to occur at greater depths.
temperature
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increases
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depth inside the Earth
higher
lower
earth's surface
temperature
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