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The Atomic Bombing of Hiroshima Trivia Questions

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

1.

The Atomic Bombing of Hiroshima left a large crater at the hypocenter.

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Easy
✗ FALSE

The bomb was an airburst at about 1,900 feet, so it created no crater. The blast wave flattened buildings, but ground zero had no large hole.

2.

The Atomic Bombing of Hiroshima caused Japan to surrender unconditionally immediately on August 6, 1945.

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Easy
✗ FALSE

Japan surrendered on August 15, 1945, after the Nagasaki bombing and Soviet declaration of war. The Hiroshima bombing alone did not cause immediate surrender.

3.

The Atomic Bombing of Hiroshima used a plutonium-239 implosion bomb.

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Medium
✗ FALSE

Hiroshima was hit by Little Boy, a uranium gun-type bomb. The plutonium implosion bomb, Fat Man, was dropped on Nagasaki three days later.

4.

The Atomic Bombing of Hiroshima was preceded by leaflets warning civilians to evacuate.

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Medium
✗ FALSE

No leaflets were dropped on Hiroshima before the bombing. Leaflets warning of destruction were dropped on some Japanese cities, but only after Hiroshima.

5.

The Atomic Bombing of Hiroshima was the first use of a nuclear weapon in warfare.

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Medium
✓ TRUE

The bombing on August 6, 1945, was the first combat use of a nuclear weapon. The Trinity test in July 1945 was the first detonation overall.

6.

The Atomic Bombing of Hiroshima created a mushroom cloud that reached an altitude of over 40,000 feet.

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Medium
✓ TRUE

The mushroom cloud from the explosion rose to an estimated 40,000 to 50,000 feet, as reported by the crew of the Enola Gay.

7.

The bomb used in the Atomic Bombing of Hiroshima contained approximately 64 kilograms of enriched uranium.

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Hard
✓ TRUE

Little Boy contained about 64 kg of uranium enriched to ~80% U-235, with less than 1 kg actually undergoing fission, yielding 15 kilotons.

8.

The Atomic Bombing of Hiroshima targeted the Aioi Bridge as the aiming point.

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Hard
✓ TRUE

The bombardier of the Enola Gay aimed at the T-shaped Aioi Bridge to ensure maximum destruction. The bomb detonated approximately 600 meters above the city.

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