Supervolcanoes & Volcanic Winter

Question 1

Which statement best explains how sulfur‑dioxide gas released by a supervolcano can cause a volcanic winter?

Accepted Answer

The sulfur‑dioxide rises into the stratosphere, forms tiny sulfate particles that scatter and reflect sunlight, reducing the Sun’s heat at Earth’s surface.

Answer

The sulfur‑dioxide melts in the atmosphere, releasing heat that warms the planet for several years.

Answer

The sulfur‑dioxide mixes with dust in the lower atmosphere, creating a thick cloud that absorbs sunlight and makes the surface hotter.

Answer

The sulfur‑dioxide reacts with rainwater to make acid rain, and the thick rain clouds block sunlight from reaching the ground.

Question 2

In a class presentation about a massive volcanic eruption, the teacher explains that the sulfur dioxide released into the stratosphere caused a temporary drop in global temperatures. Which statement best describes how this happened?

Accepted Answer

The sulfur dioxide rises to the stratosphere, where it forms tiny sulfate aerosol particles that scatter and reflect sunlight back to space, so less solar energy reaches Earth’s surface, causing cooling.

Answer

The sulfur dioxide mixes with water vapor to create thick ash clouds that fall to the ground and block the sun’s heat, leading to cooling.

Answer

The sulfur dioxide reacts with oxygen to become a greenhouse gas that traps more heat and warms the planet.

Answer

The sulfur dioxide directly absorbs heat from the atmosphere and turns it into cold wind, lowering temperatures.

Question 3

You are making a Venn diagram to compare the eruption of the Nova Basin supervolcano with the eruption of the ordinary volcano Crest Peak. Which pair of statements would correctly go in the separate (non‑overlapping) parts of the diagram, showing the difference in eruption size and climate effect?

Accepted Answer

Size: Nova Basin ejects about 5,000 km³ of ash, while Crest Peak ejects about 0.05 km³. Climate: Nova Basin can produce a global volcanic winter, whereas Crest Peak usually affects only nearby weather.

Answer

Size: Nova Basin ejects about 5,000 km³ of ash, while Crest Peak ejects about 0.05 km³. Climate: Both eruptions cause only short‑term regional cooling.

Answer

Size: Nova Basin ejects about 0.05 km³ of ash, while Crest Peak ejects about 5,000 km³. Climate: Nova Basin leads to global warming, while Crest Peak leads to global cooling.

Answer

Size: Both volcanoes eject roughly the same amount of ash (≈1 km³). Climate: Nova Basin creates permanent climate change, while Crest Peak causes no climate change.

Try three questions

Which statement best explains how sulfur‑dioxide gas released by a supervolcano can cause a volcanic winter?

In a class presentation about a massive volcanic eruption, the teacher explains that the sulfur dioxide released into the stratosphere caused a temporary drop in global temperatures. Which statement best describes how this happened?

You are making a Venn diagram to compare the eruption of the Nova Basin supervolcano with the eruption of the ordinary volcano Crest Peak. Which pair of statements would correctly go in the separate (non‑overlapping) parts of the diagram, showing the difference in eruption size and climate effect?

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