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What Are Two Sources of Thermal Energy in Earth's Interior

Elena Rostova • • 9 min read
What Are Two Sources of Thermal Energy in Earth's Interior
★ Key Takeaways

The Flow of Heat from Earth’s Interior to the Surface Is Estimated at 47±2 Terawatts (Tw) and Comes from Two Main Sources in Roughly Equal Amounts: the Radiogenic Heat Produced by the Radioactive Decay of Isotopes in the Mantle and Crust, and the Primordial Heat Left over from the Formation of Earth.

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Direct Answer • Key Takeaway

The Flow of Heat from Earth’s Interior to the Surface Is Estimated at 47±2 Terawatts (Tw) and Comes from Two Main Sources in Roughly Equal Amounts: the Radiogenic Heat Produced by the Radioactive Decay of Isotopes in the Mantle and Crust, and the Primordial Heat Left over from the Formation of Earth.

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Elena Rostova
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Elena Rostova

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.