The Atom Bombs and the Decision to Use Them

Slides:



Advertisements
Similar presentations
The Second World War Ends: The Manhattan Project and The Defeat of Japan.
Advertisements

Atomic Bomb Iwo Jima and Okinawa opened the way for an invasion of Japan. Iwo Jima and Okinawa opened the way for an invasion of Japan. It was estimated.
Manhattan Project Developing the Atomic Bomb Please get out your notebook and a pen or pencil.
The Atomic Bomb The US Decision to drop the atomic bomb on Japan.
Please be seated right away Notebook (you will need one)Notebook (you will need one) Pen/PencilPen/Pencil Your attention – I’m going to need all of the.
Bell Quiz (Pgs. 583 – 587) 1. Where was the first atomic bomb tested? 2. When did President Truman order the military to make final plans for dropping.
■Essential Question: –What role did the United States play in fighting in Asia during World War II? ■Warm-Up Question: –What was the significance of :
The Atomic Bomb A.Developing the Bomb B.Truman’s Decision C.The Right Decision?
11/02 Bellringer 5+ sentences The US introduced atomic weapons to warfare in 1945 as a way of ending World War Two. Many people around the world have since.
+ Technology of WWII Atomic Bomb End of WWII. + Axis and Allied Powers worked to develop new technology during this time to win the war.
Getting to California Manhattan Project – Secret government project which began in 1941 towards the construction of a nuclear weapon that was completed.
The Atom BombsThe Atom Bombs 1. The A-Bomb Project a.1939: German scientists split uranium atoms, creating a nuclear reaction b.May ’42: FDR created a.
Nuclear Bombs Manhattan Project. Conception America feared an invasion of Japan would cost too many lives Manhattan Project (1942): Research and Development.
The A-Bomb ProjectThe A-Bomb Project a.1939: German scientists split uranium atoms, creating a nuclear reaction b.May ’42: FDR created a secret $ 2B A-bomb.
The Atomic Bomb End of the War. FDR to Truman Roosevelt did not live to see the final battles of the Pacific war (died of a stroke o April 12, 1945) Harry.
THE ATOMIC BOMB. Manhattan Project 1.In 1939, FDR was warned that the Nazis were attempting to build an atomic bomb. FDR wanted to create the weapon first.
A Brief History of the Atomic Bomb
Endgame and the Atomic Bomb
Manhattan Project Developing the Atomic Bomb
April 11, 2017 U.S. History Agenda:
Atomic Bomb.
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
Was the U.S. justified in dropping the atomic bomb on Japan?
The End of World War II.
Atomic Bomb.
Essential Question: What role did the United States play in fighting in Asia during World War II? Warm-Up Question: What was the significance of : The.
Truman, Hirohito, and the Bomb
“Fighting World War II” notes “The Manhattan Project” inquiry activity
Outcome: The Atom Bombs and the Decision to Use Them
Hiroshima and Nagasaki
NOTES-CHECK #s 26 – 30 LAST FRIDAY
Developing the Atomic Bomb
World War II Ends Lesson 24-5
The Manhattan Project.
Manhattan Project Nuclear Bombs.
Outcome: The Atom Bombs and the Decision to Use Them
The End of the War.
Outcome: The Atom Bombs and the Decision to Use Them
“Fighting World War II” notes “The Manhattan Project” inquiry activity
Manhattan Project Developing the Atomic Bomb
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
Use of the Atomic Bombs in Japan
Essential Question: What role did the United States play in fighting in the Pacific during World War II?
Outcome: The Atom Bombs and the Decision to Use Them
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
The Atomic Bomb At the start of WWII in 1939 the atomic bomb had not yet been invented. However, scientists discovered about that time that a powerful.
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
Essential Question: What role did the United States play in fighting in the Pacific during World War II?
What was the US plan for ending the Pacific War?
Objectives Formulate opinions using an opinion continuum on whether the United States was justified to drop both atomic bombs on Japan in 1945 Examine.
Outcome: The Atom Bombs and the Decision to Use Them
Manhattan Project Developing the Atomic Bomb
Outcome: The Atom Bombs and the Decision to Use Them
Outcome: The Atom Bombs and the Decision to Use Them
“Fighting World War II” notes “The Manhattan Project” inquiry activity
“Fighting World War II” notes “The Manhattan Project” inquiry activity
Outcome: The Atom Bombs and the Decision to Use Them
Unit 8 Test: Wednesday, January 30
“Fighting World War II” notes “The Manhattan Project” inquiry activity
Outcome: The Atom Bombs and the Decision to Use Them
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
“Fighting World War II” notes “The Manhattan Project” inquiry activity
End of the War in the Pacific War in Europe
Outcome: The Atom Bombs and the Decision to Use Them
While the war was coming to an end in Europe, the Allies continued to fight the Japanese in the Pacific.
Essential Question: What role did the United States play in fighting in the Pacific during World War II?
Atomic Bomb.
Journal Question What feelings does this video elicit? What words go through your mind?
How did the U.S. help end World War II? Notes #53
The Destruction of Hiroshima and Nagasaki
Presentation transcript:

The Atom Bombs and the Decision to Use Them

The A-Bomb Project 1939: German scientists split uranium atoms, creating a nuclear reaction. May 1942: FDR created a secret $2 billion A-bomb program: The Manhattan Project 600,000 workers and world famous scientists contributed (a race was underway) Albert Einstein: German refugee (Jewish) Enrico Fermi: Italian refugee J.R. Oppenheimer: American Jew (scientific director) December 1942: The U.S. program successfully created a nuclear reaction. The actual bombs were constructed in a lab in Los Alamos, New Mexico.

Upon FDR’s death (April 12, 1945) even Truman was unaware of the Manhattan Project.

Meeting at Potsdam, Germany

Meeting at Potsdam, Germany Following VE Day (May 8, 1945) Allied leaders agreed to meet in Potsdam, Germany. Purpose: To decide the fate of post-war Europe and how to defeat Japan. July 16, 1945: While at the Potsdam Conference, Truman received news that: The “Trinity Test” in Alamogordo, NM had succeeded. 2 more bombs had been produced and others were on the way. Stalin did not seem surprised when Truman told him. He already knew. July 26, 1945: The allies warned Japan to surrender or face prompt and utter destruction.

The Trinity Test

Truman’s Decision President Truman relied on advisers, but he made the final decision. Over 70 project scientists and General Eisenhower advised against using the bombs. The decision was based on: Saving U.S. lives, money, and to shorten the war by 12-18 months. The fact that conventional warfare had not forced a Japanese surrender, despite high casualties. Estimates that Japan still had 4 million soldiers ready to fight and die. Gaining an upper hand on the Soviet Union in the post-war negotiations. (The Soviet Union was scheduled to enter the war against Japan on August 8, 1945.) Preventing its future use by using it now (deterrent)

Truman never questioned or apologized for his decision.

The Defeat of Japan in 1945 August 6, 1945: Little Boy was dropped from the B-29 bomber nicknamed Enola Gay, exploding 2,000 feet above Hiroshima (100,000 people died) August 9, 1945: Fat Man was dropped on Nagasaki (100,00 people died) Fat Man was smaller than Little Boy August 14, 1945: V-J Day September 2, 1945: Japan signed the unconditional surrender.

The Enola Gay

Fat Man

Hiroshima

Fat Man Explodes

Little Boy

Nagasaki

Result The Allies had won World War II. The war literally ended with a bang and no country has used the atomic bomb since Nagasaki. Peace would be short lived, however, as tensions with the Soviet Union were on the rise, which would then begin the Cold War.