The Eruptions Observed on Io Are Thought to Most Clearly

question 284

Multiple Choice

The eruptions observed on Io are thought to most clearly resemble:

• A) volcanoes, producing lava flows and columns of erupting silicate ash.
• B) geysers, where material is shot upward more or less continuously by the pressure of gas produced below the surface.
• C) terrestrial mid-ocean ridges, where upwelling molten rock pushes the crust apart.
• D) explosions, where material is thrown upward by a single burst and then falls back to the surface.

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