Volcanic activity on Venus is thought to be:

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Volcanic activity on Venus is thought to be less frequent, but more violent than volcanic activity on Earth. Venus has a thicker crust and mantle compared to Earth, resulting in a more explosive eruption when volcanic activity occurs. Additionally, the lack of plate tectonics on Venus means that volcanic activity is not as easily dispersed, leading to longer periods of dormancy before a new eruption occurs. Venus is believed to have fewer volcanic eruptions than Earth, but those that do occur are believed to be more explosive and violent. This is due to the fact that Venus lacks tectonic plates, which allow pressure to be released slowly over time. Instead, pressure builds up over time until it reaches a critical point and is released in a single, powerful eruption.

Volcanic Activity on Venus Is Thought to Be