Volcanic Eruptions Quiz

Estimated Completion Time
2 min
Volcanic Eruptions Quiz
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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?
Mount Tambora
Mount Vesuvius
Krakatoa
Correct Answer
Wrong Answer

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)?
7
8
10
Correct Answer
Wrong Answer

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?
Plinian
Vulcanian
Strombolian
Correct Answer
Wrong Answer

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

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Which state has a type of eruption named after it?
Alaska
Hawaii
California
Correct Answer
Wrong Answer

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?
6
7
8
Correct Answer
Wrong Answer

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?
1899
1965
1991
Correct Answer
Wrong Answer

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

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On the volcanic explosivity index, what's the maximum plume height of a category 3 eruption?
3 miles
5 miles
9 miles
Correct Answer
Wrong Answer

The maximum height for category 3 is 9 miles.

What material makes "vulcanian" eruptions so dangerously explosive?
calcium
manganese
silica
Correct Answer
Wrong Answer

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.
true
false
Correct Answer
Wrong Answer

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

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The eruption of which volcano caused "The Year Without a Summer"?
Krakatoa
Mount Pinatubo
Mount Tambora
Correct Answer
Wrong Answer

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?
miles-deep ash deposits
history-changing wildfires
the worst famine in the 1800s
Correct Answer
Wrong Answer

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?
5,000
15,000
30,000
Correct Answer
Wrong Answer

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

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When was the last time Hawaiian volcano Mauna Loa erupted?
1911
1984
1999
Correct Answer
Wrong Answer

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?
the past 2,000 years
the past 38,000 years
the past 700,000 years
Correct Answer
Wrong Answer

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?
9
14
57
Correct Answer
Wrong Answer

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

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The explosions from Mount St. Helens ripped off the top of the volcano, reducing the peak by how many feet?
500 feet
1,300 feet
2,700 feet
Correct Answer
Wrong Answer

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?
more than a foot
about 6 inches
3 inches
Correct Answer
Wrong Answer

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

The Huaynaputina eruption of 1600 probably had which VEI rating?
3
6
8
Correct Answer
Wrong Answer

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

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Where was the last supervolcano eruption on Earth?
Antarctica
Wyoming
Namibia
Correct Answer
Wrong Answer

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

In human history, how many times has Mount Vesuvius erupted?
at least 30
at least 90
at least 120
Correct Answer
Wrong Answer

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?
5,000
25,000
40,000
Correct Answer
Wrong Answer

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

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Phreatomagmatic eruptions refer to the interaction of magma and what other substance?
water
topsoil
loose boulders
Correct Answer
Wrong Answer

Hot magma and cooler water make for an explosive combination.

What aspect of the Nevado del Ruiz made its eruption so deadly?
awful mudflows
poisonous gases
huge amounts of ash
Correct Answer
Wrong Answer

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?
60%
35%
25%
Correct Answer
Wrong Answer

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

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The Laki eruption may have started a domino effect that killed how many people around the world?
more than 500,000
more than 1 million
more than 6 million
Correct Answer
Wrong Answer

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?
more than 3,000
more than 36,000
more than 120,000
Correct Answer
Wrong Answer

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?
30
300
3,000
Correct Answer
Wrong Answer

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

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For how long were global temperatures lower than normal due to the Krakatoa eruption?
about 18 months
about three years
about five years
Correct Answer
Wrong Answer

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?
Plinian
Pelean
Vulcanian
Correct Answer
Wrong Answer

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?
Spain
Costa Rica
Guatemala
Correct Answer
Wrong Answer

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

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