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Uncover Earth's Hidden Heat

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Questions and Answers

Which two sources contribute to Earth's internal heat in roughly equal amounts?

Solar radiation and radiogenic heat

Radiogenic heat and primordial heat (correct)

Geothermal gradients and mantle convection

Volcanism and plate tectonics

What drives mantle convection, plate tectonics, mountain building, rock metamorphism, and volcanism?

Earth's internal heat (correct)

Solar radiation

Incoming solar radiation

Geothermal gradients

What is theorized to sustain Earth's magnetic field?

Mantle convection

Plate tectonics

Radiogenic heat

Geodynamo (correct)

What percentage of Earth's total energy budget at the surface does Earth's interior heat contribute?

<p>0.03%</p> Signup and view all the answers

What is the estimated flow of heat from Earth's interior to the surface?

<p>47±2 terawatts (TW)</p> Signup and view all the answers