United States Volcanoes Quiz
Cascade volcanoes, hotspots, volcanic history (10 questions).
United States Volcanoes Quiz: Quick Study Notes
The United States is home to some of the world’s most active and diverse volcanic landscapes. From the explosive stratovolcanoes of the Pacific Northwest to the gentle yet massive shield volcanoes of Hawaii, this quiz explores the geological forces shaping the nation.
Key Takeaways
- The Cascade Range includes major active peaks like Mt. St. Helens and Mt. Rainier.
- Hawaii’s volcanoes are formed by a hotspot located in the middle of the Pacific Plate.
- Yellowstone contains a massive underground magma chamber responsible for geysers and hot springs.
- Lassen Peak is the southernmost active volcano in the Cascade Range.
- The Aleutian Arc in Alaska contains over 100 active volcanoes.
Frequently Asked Questions
What is the most active volcano in the US?
Kilauea in Hawaii is historically considered the most active volcano in the United States, having erupted continuously from 1983 to 2018 and frequently since.
Which US volcano erupted violently in 1980?
Mount St. Helens in Washington State erupted on May 18, 1980, removing the top 1,300 feet of the mountain and causing widespread devastation.
Is Yellowstone considered a volcano?
Yes, Yellowstone is a supervolcano. Its main feature is a massive caldera formed by cataclysmic eruptions over the last 2.1 million years.
Where are most US volcanoes located?
The majority of active US volcanoes are located in Alaska (Aleutian Islands), Hawaii, and the Pacific Northwest (Cascade Range).
What is a stratovolcano?
A stratovolcano is a tall, conical volcano built up by many layers of hardened lava and tephra. Examples include Mt. Rainier and Mt. Fuji.
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