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Krakatoa Trivia Questions

How much do you really know about Krakatoa? Below are 8 true or false statements. Click each one to reveal the answer and explanation.

1.

No one survived the 1883 Krakatoa eruption because the tsunami waves were too powerful.

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Easy
✗ FALSE

Thousands did die, but many people survived on nearby islands or ships at sea. Over 36,000 lives were lost, mostly from tsunamis, but survivors existed.

2.

Anak Krakatoa, the child of Krakatoa, first emerged from the sea in 1927.

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Easy
✓ TRUE

After the 1883 caldera collapse, a new volcanic cone, Anak Krakatoa (Child of Krakatoa), began forming in 1927 and has been erupting intermittently ever since.

3.

The 1883 Krakatoa eruption actually lowered global temperatures by over a degree for a year.

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Medium
✓ TRUE

Sulfate aerosols from the eruption blocked sunlight, causing a global temperature drop of about 1.2°C (2.2°F) for the following year, leading to bizarre sunsets worldwide.

4.

Krakatoa's 1883 eruption was so loud it was heard 3,000 miles away on Rodrigues Island.

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Medium
✓ TRUE

The explosion was heard across 1/8th of the Earth's surface. People on Rodrigues Island, near Africa, reported hearing a sound like distant cannon fire over 3,000 miles away.

5.

Krakatoa is the only volcano to have ever destroyed an entire island.

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Medium
✗ FALSE

Many volcanoes have destroyed islands (e.g., Santorini, Thera). Krakatoa's 1883 eruption collapsed much of the island, but a remnant remained, and Anak Krakatoa later emerged.

6.

The 1883 eruption of Krakatoa was caused by a massive undersea earthquake.

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Medium
✗ FALSE

The eruption was a volcanic explosion, not directly triggered by an earthquake. It resulted from magma mixing and pressure buildup. Earthquakes did occur, but as a symptom, not the cause.

7.

Krakatoa's eruption in 1883 was the loudest sound ever recorded in human history.

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Hard
✓ TRUE

The explosion generated a sound pressure wave that circled the Earth seven times. It's widely considered the loudest noise ever recorded, reaching 310 dB SPL.

8.

The name 'Krakatoa' comes from an old Javanese word meaning 'thundering mountain.'

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Hard
✗ FALSE

The origin of the name 'Krakatoa' is uncertain, but it's likely a Western corruption of the Indonesian name 'Krakatau.' There's no known Javanese word meaning 'thundering mountain' for it.

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