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Gas giant planets are not known to be geologically active, since their cores are under a hot, dense lower atmosphere.

A larger terrestrial planet, however, might exhibit a greater segregation of heavier metals in the core, as on Earth, leaving the lighter minerals more likely to be affected by tidal forces.

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13y ago
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4mo ago

Larger planets retain more internal heat due to their higher mass, which drives geological activity such as volcanic eruptions and tectonic plate movement. This heat can come from the planet's formation and radioactive decay of elements within it. Smaller planets cool faster and have less internal heat to drive geological processes.

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Q: Why are larger planets more geologically active than smaller ones?
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