THE ATOMIC BOMBINGS and THE END OF WORLD WAR II
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THE ATOMIC BOMBINGSand
THE END OF WORLD WAR II
AUGUST – SEPTEMBER, 1945
QUIZ, pp. 749-53 The scientist in charge of the Manhattan Project
was named __?__ The first successful detonation of an atomic
weapon was held in what U.S. state? Who was U.S. President when the first successful
detonation took place? The two atomic bombs were nicknamed __?__ and
__?__. The airplane that dropped the first atomic bomb
was nicknamed __?__. What two Japanese cities were attacked with
atomic bombs? Which one was attacked first? The 1945 Yalta Conference laid the foundation
for an international peace-keeping organization called the __?__
Nazi war criminals were prosecuted in the __?__ trials.
What nations occupied Germany after WWII?
The End of the War Japan Loses Ground: Why?
U.S. submarine campaign Massive U.S. bombing campaign Heavy battlefield casualties
Desperate measures: “Kamikaze” (Define) campaign “No surrender” on battlefield Homeland defense training
U.S. Closes in: How will the war End?
The Atomic Bomb When?
1942 -1945 Where?
Oak Ridge, Tennessee Los Alamos, New Mexico
Codename: The Manhattan Project Who?
Gen. Leslie Groves J. Robert Oppenheimer
The First Test: July 16, 1945 Trinity Site, Alamogordo, New Mexico Success
THE MANHATTAN PROJECT
TRINITY TEST SITE TOWER
TRINITY TEST, JULY 16, 1945
DETONATION SEQUENCE
10 SEC. AFTER DETONATION
DETONATION – FROM DISTANCE
To Bomb Or Not To Bomb Why drop the bomb?
Prevent an invasion of Japan Prevent the risk of massive casualties End the war more quickly
Why Not? Is it ethical? Do we really need to? Do we understand the long-term
effects? What do YOU think?
THE ATOMIC BOMBINGS When?
August 6, 1945: Hiroshima August 9, 1945: Nagasaki
Effect? Describe: Result? Sept. 2, 1945 – Japan
Surrenders World War II Ends
TIBBETS & SWEENY
MajorCharles Sweeny,U.S. Army A.F.,Lead Pilot,Nagasaki Mission
NAGASAKI BOMBER B-29 SUPERFORTRESS
“BOCKS CAR”
AERIAL VIEW - NAGASAKI BEFORE BOMBING
AERIAL VIEW – NAGASAKI AFTER BOMBING
NAGASAKI
BOMBING
AUGUST 9th,
1945
“LITTLE BOY” ATOMIC BOMB
“FAT MAN” ATOMIC BOMB
TYPES OF ATOM BOMBS
Hiroshima “Gun” Bomb
Nagasaki “Implosion” Bomb
ATOMIC BOMB FIGURES WW II ATOMIC BOMBS:
1000 TONS OF TNT = 1 “KILOTON” WW II BOMBS = 13,000 TONS = 13
KILOTONS 1952 “HYDROGEN” BOMB:
1 MIL. TONS OF TNT = 1 “MEGATON” HYDROGEN BOMB = 3 MIL. TONS OF TNT =
3 MEGATONS 1955: U.S. HAD 30,000+ MEGATONS OF
NUCLEAR WEAPONRY ALL EXPLOSIVE ORDNANCE USED BY
ALL NATIONS IN WWII ADDED TOGETHER = 1.2 MEGATONS
HIROSHIMA – AFTER BOMBING
HIROSHIMA “SHADOW”
NAGASAKI AFTERMATH
JAPANESE URBAN TARGETS
NAGASAKI BLAST RADIUS
NAGASAKI BOMB CASUALTIES
DISTANCE FROM GROUND ZERO (KM): 0-1.0 km: 88% Killed, 6% Injured, Pop.:
30,900 1.0-2.5 km: 34% Killed, 29% Injured,
Pop.: 27,700 2.5-5.0 km: 11% Killed, 10% Injured,
Pop.: 115,200
TOTAL: 22% Killed, 12% Injured,Pop.: 173,800
ATOMIC BOMB CASUALTIES
BOMBING EFFECTS ON JAPAN
Final Results: The War in The Pacific,
1931-45 ALLIES WIN; JAPAN SURRENDERS UNCONDITIONALLY
Japan occupied by U.S. Military Gen. Douglas MacArthur commands
occupation forces Casualties:
Allies: KILLED Military: 4 Million Civilian: 25 Million
Axis (Japan): KILLED Military: 2 Million Civilian: 960,000
Other Results: The Pacific War
Japan forced to adopt democratic-style gov’t.
China plunged into Civil War: Communists v. Nationalists (Mao
Zedong v Chiang) Korea divided:
North Korea (Communist) South Korea (Pro-Western)
Europeans begin losing colonies: Asian independence movements gain strength: Example: French Indochina - Vietnam
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