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🌋 Yellowstone and the supervolcano beneath it

Trace Yellowstone’s hotspot, caldera-forming eruptions, magma and hydrothermal system, and what scientists actually monitor today.

lessons

~30 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

A volcano hidden in a landscapeExplain why Yellowstone is a caldera-forming volcanic system and what supervolcano means.A broad collapsed caldera records enormous past eruptions beneath an apparently ordinary landscape.
The hotspot and the eruption recordTrace the hotspot track, major eruption cycles, and the partly molten system beneath Yellowstone.A moving plate crossed a persistent heat source, producing a changing volcanic field rather than a repeating countdown.
Why the surface steamsDescribe how groundwater, heat, pressure, and fractures create geysers, hot springs, and hydrothermal explosions.Most visible thermal features are groundwater systems powered by volcanic heat, not exposed magma.
Watching a living volcanic systemDistinguish active geology from imminent eruption and identify the signals scientists monitor.Yellowstone is active and hazardous, but current monitoring does not show an impending caldera-forming eruption.

Questions this course answers

What is a caldera?

A caldera forms when magma withdrawal leaves the overlying crust unable to support its roof.

Put this volcanic history in order from oldest to youngest.

Yellowstone’s major eruption cycles span about 2.1 million years to later lava flows tens of thousands of years ago.

Match each feature to its best description.

These features involve the same volcanic system but different depths, materials, and energy sources.

Why does active Yellowstone not mean a super-eruption is about to happen?

Earthquakes, deformation, gases, and hot springs show a living system, not a precise countdown. The magmatic system is mostly solid and the short-term eruption probability is very low.

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