UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is one of the primary sources of heat in the earth’s interior?
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heat from the sun
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microwave radiation
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radioactive decay
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kinetic energy as we move in orbit around the sun
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Explanation:
Detailed explanation-1: -About 50% of the Earth’s internal heat originates from radioactive decay. Four radioactive isotopes are responsible for the majority of radiogenic heat because of their enrichment relative to other radioactive isotopes: uranium-238 (238U), uranium-235 (235U), thorium-232 (232Th), and potassium-40 (40K).
Detailed explanation-2: -Decay heat is the heat released as a result of radioactive decay. This heat is produced as an effect of radiation on materials: the energy of the alpha, beta or gamma radiation is converted into the thermal movement of atoms.
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