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Hiroshima and Nagasaki. By: Leah, and Zen. Date Started . Hiroshima and Nagasaki were bombed in 1945 on August 6, and August 9, respectively. . Maps . Location of Hiroshima and Nagasaki. Map showing the devastation of the damage wrought upon by the atomic bomb in Hiroshima.

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hiroshima and nagasaki

Hiroshima and Nagasaki

By: Leah, and Zen

date started
Date Started
  • Hiroshima and Nagasaki were bombed in 1945 on August 6, and August 9, respectively.

Location of Hiroshima and Nagasaki

objective of the attacking force
Objective of the Attacking Force
  • Prior to the bombing of the two cities, despite having been bombed incessantly and defeated in many battles by the US, Japan refused to sign the Potsdam declaration
  • This treaty would bring about the unconditional surrender of the Japanese
  • As a result, President Truman authorized the use of the atomic bombs on Japan
  • Did so in hopes of making Japan surrender after witnessing the destruction the A-bombs will have caused
weapon used
Weapon Used
  • The weapon used in this battle was the atomic bomb
  • Unlike conventional bombs, the nuclear bomb did not rely on non-nuclear chemical reactions but rather on atomic fission to detonate
  • Atomic fission is the process in which an unstable isotope of a large atoms splits as a result of a neutron hitting it into smaller atoms and neutrons
  • These neutrons will then hit other atoms, triggering a chain reaction which will eventually result in the immense amount of heat released

Little Boy

Fat Man

the victor
The Victor
  • The victor was the United States
  • Both Hiroshima and Nagasaki were left utterly destroyed
  • Prior to the bombings, the US managed to win the nuclear arms race due to several important factors
  • During the rise of Nazi Germany, many scientists fled to America to avoid potential prosecution
  • So, Germany suffered from a “brain drain” of brilliant physicists

Throughout the entire war, America was not heavily involved until the latter years

  • In addition, America was surrounded on both sides by the Pacific and Atlantic Oceans
  • US had also come out of the Great Depression, economically strong
  • So, the Americans had a large amount of funding relative to the other countries, which were either too involved in the war of short of funds to devise atomic weaponry
  • Also, in the air raids of Germany, British and American bombers destroyed factories that produced what seemed to be parts of atomic bombs.
the consequences
The Consequences
  • Hiroshima
    • “Little Boy”, a 9000 pound atomic bomb, was dropped on the City of Hiroshima after
    • Japan refused to signed the Potsdam Declaration
    • This atomic bomb has the equivalence of about 12.5 kilotons-12 500 tons of TNT
    • As Japan refused to surrender unconditionally to the Potsdam declaration, the United
    • States dropped an atomic bomb on Hiroshima
    • The Potsdam Declaration reiterates the allies’ demand that Japan surrenders

unconditionally, Japan did not respond

  • This bomb destroyed the city killing about 140 000 Japanese by the end of 1945
  • The intense heat of the bomb transformed many things such as animals, trees, people,
  • and buildings- into gases
  • This bomb had vaporized them do to extreme heat
  • The victor in the raid was the United states
  • This was the very first bomb to ever be used in war history


    • Occurred on August 9, 1945
    • “Fat Man”, a 10 000 pound atomic bomb, was dropped on the city of Nagasaki as Japan
    • had still refused to surrender
    • This bomb was the second to be used in war
    • Japan had still refused to sign the Potsdam declaration and so another atomic bomb was
    • dropped by the United States on Japans second largest military base

Overall Consequences

    • The bombed had destroyed anyone and anything within a radius of a hundred or so yards-- no one survived
    • 9 out of every 10 people who were outside during the explosion died
    • Everything went black and silent as the huge mushroom cloud rose skyward blocking the
    • sunlight
    • Casualties rose to about 140 000 and the amount injured included 130 000, 43 000 were

considered severe

  • Even people who survived the bomb were unfortunately still going to die
  • All this damage was caused by a 9000 pound uranium atomic bomb that was dropped at
  • approximately 8:16:02 in the morning (little boy)
  • 98% of all houses in Hiroshima were destroyed
  • There were shortages of food and medicine, for the victims of the bomb
  • After the bombings, Japan agreed to sign the Potsdam declaration

The Potsdam declaration forced Japan to make military-related concessions

  • These included:
    • Complete surrender of all Japanese forces and arms, at home, on land, and in occupied countries
    • Occupation of Allied forces in Japan under American direction
    • Japanese relinquishment of all territory seized during the war, as well as, Manchuria, Korea and Taiwan (these three were seized before WWII)

United States

    • Although they claimed victory over Japan, there were mishaps
    • It was reported that radiation sickness has been trickling back to the United States
    • The destruction they cause back fired on to them
    • The US had wanted Japan to surrender to them and therefore used force to do so