Free quiz · 8 questions · Easy to Boss
Volcanoes quiz
How well do you really know Volcanoes? These 8 questions start easy and end with a Boss round. There are no multiple choice options: you type what you know, and every answer is checked against the key facts.
60 seconds a question, one 2x boost, and a leaderboard. Playing with friends writes a fresh set of Volcanoes questions for your group.
The questions
- Easy
Under the ocean, what erupts from a growing volcano, and how can it eventually become an island?
Show the answer
- Lava erupts underwater
- Repeated eruptions pile up layers of lava
- The volcanic pile rises above sea level to form an island
- Easy
Which eruption buried Pompeii and Herculaneum, and in what year did it happen?
Show the answer
- The eruption of Mount Vesuvius
- It happened in AD 79
- The cities were buried by volcanic material
- Medium
At tectonic plate edges, what can the plates do, and how can that movement help magma reach the surface?
Show the answer
- Plates can move apart or collide
- Movement can create cracks or zones where rock melts
- Magma rises through the crust and erupts
- Medium
What is the Pacific Ring of Fire, and what makes so many volcanoes form around it?
Show the answer
- A belt of volcanoes around the Pacific Ocean
- It follows the edges of tectonic plates
- Many volcanoes form where plates meet and one sinks beneath another
- Medium
What can volcanic ash do to an aircraft engine, and how can ash from an eruption reach distant flight paths?
Show the answer
- Ash can melt inside a hot engine and form glassy material
- This can clog or damage engine parts
- Winds can carry ash clouds far from the volcano
- Medium
Heavy rain sweeps down a volcano’s slopes—what is this rushing flow called, and what volcanic material does it carry?
Show the answer
- It is called a lahar.
- It is a fast-moving volcanic mudflow.
- It can carry ash, rock, and water.
- Hard
When Mount St. Helens erupted in 1980, what part of the mountain was blown away, and what crater shape did the eruption leave?
Show the answer
- The north side or flank was blown away
- A large horseshoe-shaped crater was left
- A landslide and sideways blast helped reshape the mountain
- Boss
What is a hotspot volcano, and what age pattern among Hawaii’s islands shows the Pacific Plate moving over one?
Show the answer
- A hotspot is a relatively fixed source of hot material rising from deep within Earth
- The Hawaiian Islands formed as the Pacific Plate moved over the hotspot
- Hawaii is the youngest island, and islands get older toward the northwest
How scoring works
- Each question has 2 or 3 key facts. Each one earns full, half or no credit, so a wrong answer scores zero.
- Later questions are worth more, fast answers earn a bonus, and great answers in a row build a streak.
- A famous myth or a clear factual error halves the points.
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