Volcanic Eruptions Quiz



By: Staff

4 Min Quiz

Image: refer to hsw

About This Quiz

Volcanic eruptions remind us of Earth's primal power. How much do you know about these lava-scorched events?

Which volcano was responsible for the most deaths in recorded history?

The top third of the Indonesian mountain was blown off and more than 90,000 people were killed.


What is the highest number on the volcano explosivity index (VEI)?

The rating of eight refers to the most powerful type and indicates a supervolcano eruption.


Which of the following tends to be the most powerful and dangerous?

The bomb-like 1883 eruption of Krakatoa is example of the power of a Plinian eruption.


Which state has a type of eruption named after it?

Hawaiian eruptions are the gentlest type of eruption, with low gas emissions and fluid lava.


What was the approximate VEI rating of the 1883 eruption of Krakatoa?

For all of its incredible power, this one still only ranked at about a 6.


What year was the famous eruption of Mount Pintatubo, on the island of Luzon?

About 800 people were killed and tens of thousands were left homeless.


On the volcanic explosivity index, what's the maximum plume height of a category 3 eruption?

The maximum height for category 3 is 9 miles.


What material makes "vulcanian" eruptions so dangerously explosive?

The silica makes magma more viscous, and thus, more likely to result in pent-up explosive power.


True or False: Scientists worry that the Yellowstone supervolcano is due for another major eruption.

The area is volcanically active but most researchers don't believe the conditions are suited to another big eruption anytime soon.


The eruption of which volcano caused "The Year Without a Summer"?

Global temperatures fell in 1816, a year after Tambora ejected countless tons of debris into the atmosphere.


The eruption of Mount Tambora is often blamed for what?

Agriculture all over the world failed and led to famine, which then led to rioting and other awful consequences.


In 1902, the eruption of Mount Pelee basically wiped out a city of how many people?

The devastating pyroclastic flows were so immense that they killed all but two people in the area.


When was the last time Hawaiian volcano Mauna Loa erupted?

It is one of the biggest active volcanoes in the world, but fortunately its eruptions aren't typically violent.


Scientists think that Mauna Loa has been erupting intermittently for how long?

Of course, humans have only been around for a fraction of that timespan.


The 1980 eruption of Mount St. Helens killed how many people in Washington?

This eruption is the most powerful and destructive in the history of the United States.


The explosions from Mount St. Helens ripped off the top of the volcano, reducing the peak by how many feet?

10,000 minor earthquakes gave scientists plenty of notice of the impending eruption.


In many places, ash from the 1912 Novarupta eruption in Alaska reached what depth?

There were thousands of square miles of ash, suffocating plants and animals alike.


The Huaynaputina eruption of 1600 probably had which VEI rating?

It had a VEI rating of 6 and was the biggest eruption in South America's recorded history.


Where was the last supervolcano eruption on Earth?

It happened about 640,000 years ago in the area of Yellowstone National Park.


In human history, how many times has Mount Vesuvius erupted?

In C.E. 79, a massive eruption famously buried Pompeii and Stabiae and more than 1,000 unlucky people.


Accurate forecasting may have saved how many lives before the 1991 Mount Pinatubo eruption?

About 800 people died, but many more would have perished without modern science.


Phreatomagmatic eruptions refer to the interaction of magma and what other substance?

Hot magma and cooler water make for an explosive combination.


What aspect of the Nevado del Ruiz made its eruption so deadly?

Eruptions melted glaciers and the muck swept away two-thirds of a town of 30,000 people.


In the 1780s, the Laki volcanic fissure erupted and killed what percentage of Iceland's population?

Poisonous gases killed half of the country's livestock, which then led to thousands of human deaths.


The Laki eruption may have started a domino effect that killed how many people around the world?

Its debris blocked out sunlight, leading to crop failures and then starvation all around the world.


About how many people died during the 1883 eruption of Krakatoa, in Indonesia?

Even back then, scientific instruments from all corners of the world detected the violent explosion.


The explosion from the 1883 eruption of Krakatoa was heard at least how many miles away?

Consider that the distance from New York City to Los Angeles is "only" about 2,800 miles


For how long were global temperatures lower than normal due to the Krakatoa eruption?

Smoke and ash from the volcano blocked sunlight and reduced temperatures all over the planet.


What sort of eruption might be more likely to include hazardous pyroclastic flows?

These types of eruptions cause the volcano to collapse on itself, sending the fast-moving flows zooming down the mountain.


In which country did the 1902 Santa Maria eruption occur?

This eruption turned out to be one of the most powerful eruptions of the entire 20th century.


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