August 6, 2016, marked 71 years since the United States dropped the first nuclear bomb on the Japanese city of Hiroshima, with the attack on Nagasaki following on August 9, 1945. The attacks accelerated Japan's surrender and the end of World War II, but also introduced a new type of warfare that changed the world forever. See what you know about nuclear weapons and the history of the bomb with this quiz.

Question 1

What was the name of the project that developed the first atomic bomb?

A. The Chicago Project

B. The Manhattan Project

C. The Pittsburg Project

D. The Boston Project


B. The Manhattan Project.

The foundation for what would become The Manhattan Project was laid in 1939, which was also the year Albert Einstein presented information regarding uncontrolled fission chain reactions to President Franklin Delano Roosevelt, according to the Encyclopedia Britannica.

In 1942, Brigadier General Leslie R. Groves was placed in charge of what was code-named The Manhattan Project.

Question 2

How much would the first atomic bomb cost if developed today?

A: About $26,000,000,000

B: About $22,000,000,000

C: About $18,000,000,000

D: About $10,000,000,000


A: About $26,000,000,000

According to PBS, the Allies spent some $2 billion developing the first atomic bomb, which translates into about $26 billion today.

Question 3

Which of these are the basic types of nuclear weapons?

A. Carbon Bombs

B. Atomic Bombs

C. Hydrogen Bombs

D. Only B and C

E. All of the above


D. Only B and C

According to Comprehensive Nuclear Test Ban Treaty Organization, there are two basic types of nuclear weapons: nuclear fission bombs (atomic bombs) and nuclear fusion bombs (hydrogen bombs)

Question 4

Which island was wiped out by the hydrogen bomb test of "Mike" in 1952?

A. Elugelab

B. Tieter

C. Bogon

D. Bogairikk


A. Elugelab

According to PBS, Elugelab, part of the Enewetak atoll in the Marshall Islands, was destroyed by the first hydrogen bomb test on November 1, 1952.

The blast yielded 10.4 megatons of explosive energy, The Brookings Institution reported.

Question 5

Between 1951 and 1992, how many nuclear tests were conducted at the Nevada National Security Site?

A. 877

B. 953

C. 928

D. 842


C. 928

According to, President Harry Truman established the Nevada National Security Site in 1950, and 928 atmospheric and underground nuclear weapons tests were conducted there.

The tests ended in 1992 when Congress passed the Hatfield-Exon-Mitchell Amendment, which started the country on the path to a CTB, or a Comprehensive Test Ban.

Question 6

On August 6, 1945, the United States dropped the atomic bomb "Little Boy" on Hiroshima, Japan. How many tons of TNT was the resulting explosion equivalent to?

A. 500 tons

B. 9,000 tons

C. 20,000 tons

D. 60,000 tons


C. 20,000 tons

According to the Center for Strategic & International Studies, "Little Boy" exploded with the power of more than 20,000 tons of TNT, destroying Hiroshima and killing approximately 130,000 people.

Question 7

On August 9, 1945, the United States dropped the atomic bomb "Fat Man" on Nagasaki, Japan. How many tons of TNT was the resulting explosion equivalent to?

A. 21,000 tons

B. 27,000 tons

C. 33,000 tons

D. 38,000 tons


A. 21,000 tons

"Fat Man" exploded with the force of 21,000 tons of TNT. The bomb killed an estimated 40,000 people instantly and destroyed a third of the city, according to the BBC.

Question 8

Which country has the largest nuclear arsenal?

A. France

B. Russia

C. China

D. United States


B. Russia

According to CNN, Russia tops the list with an estimated 8,420 warheads, with 1,720 of those considered to be operational.

The United States is in second place with an estimated 7,650 warheads, 2,150 of which are operational, CNN reports.

France comes in third with an estimated 300 total warheads, while China (240) and the United Kingdom (225) round out the top five.

Question 9

How many formally-recognized nuclear weapons states were listed under the 1968 Nuclear Non-Proliferation Treaty?

A. Twelve

B. Ten

C. Six

D. Five


D. Five

The countries were the United States, Russia, the United Kingdom, France and China.

According to CNN, eight countries have conducted confirmed nuclear tests. These countries include the five listed above, as well as India, Pakistan and North Korea.

Israel, which has no confirmed tests, is believed to have an estimated 80 nuclear warheads, and Iran, which also has no confirmed tests, is believed to be pursuing nuclear weapons, CNN reports.

Question 10

How many US nuclear bombs have been lost and not recovered?

A. 3

B. 8

C. 11

D. 16

>>An unidentified U.S., scientist directs hoisting operation of Jon Lindbergh’s Tiny Submarine aboard cruiser USS Boston off Palomares Beach, Spain on Feb. 26, 1966. Submarine searched for nuclear bomb missing since a U.S., B-52 jet bomber collided with a tanker and scattered its wreckage and nuclear payload along the Spanish Countryside in January 1966.


C. 11

According to the Brookings Institution, the 11 bombs were lost in accidents, such as the 1958 collision between a B-47 bomber and an F-86 Air Force jet discussed in this 2008 NPR article.

On a related note, here's a look at 13 times the U.S. almost destroyed itself with its own nuclear weapons