How does an atomic bomb work in simple terms?
They work due to a chain reaction called induced nuclear fission, whereby a sample of a heavy element (Uranium-235 or Plutonium-239) is struck by neutrons from a neutron generator. The nuclei of the fuel atoms split, releasing massive amounts of energy and more neutrons, which perpetuate the reaction.
What is a nuclear bomb?
A nuclear weapon is a device that uses a nuclear reaction to create an explosion. This explosion is much more powerful than that of conventional explosives (like TNT). When a nuclear weapon explodes, it gives off four types of energy: a blast wave, intense light, heat, and radiation.
What was the Manhattan Project BBC Bitesize?
The Manhattan Project, the USA’s secret project to develop the atomic bomb, had begun in 1939 based on the fear that the Germans were developing something similar – Albert Einstein had warned them of this. The USA’s top scientists worked on the Manhattan Project alongside some European and Jewish scientists.
How did the atomic bomb cause tension?
In August 1945 the USA detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. The intention was to force Japan to surrender, thus avoiding a long war in the Pacific. This action had the added potential of pressurizing the USSR into negotiating over Eastern Europe and Germany.
What is an atomic bomb explanation for kids?
An atomic bomb is a weapon with huge power created by splitting an atom of the element uranium. On August 6th, the bomb was dropped on the city of Hiroshima. It exploded 2,000ft (600m) above the city, creating a blast of heat and blinding light.
How do you explain a bomb to a child?
Bombs are weapons that people use to kill others and to damage property. Bombs are designed to explode. They may be dropped from aircraft, delivered by rockets, thrown by hand, or placed next to a target and blown up later.
How is a nuclear bomb made?
Modern nuclear weapons work by combining chemical explosives, nuclear fission, and nuclear fusion. The explosives compress nuclear material, causing fission; the fission releases massive amounts of energy in the form of X-rays, which create the high temperature and pressure needed to ignite fusion.
How does nuclear bomb destroy?
The detonation of an atomic bomb releases enormous amounts of thermal energy, or heat, achieving temperatures of several million degrees in the exploding bomb itself. This thermal energy creates a large fireball, the heat of which can ignite ground fires that can incinerate an entire small city.
Who started nuclear weapons?
A discovery by nuclear physicists in a laboratory in Berlin, Germany, in 1938 made the first atomic bomb possible, after Otto Hahn, Lise Meitner and Fritz Strassman discovered nuclear fission.
What is an atomic bomb made from?
Most of the uranium used in current nuclear weapons is approximately 93.5 percent enriched uranium-235. Nuclear weapons typically contain 93 percent or more plutonium-239, less than 7 percent plutonium-240, and very small quantities of other plutonium isotopes.
How hot is a nuclear bomb?
A primary form of energy from a nuclear explosion is thermal radiation. Initially, most of this energy goes into heating the bomb materials and the air in the vicinity of the blast. Temperatures of a nuclear explosion reach those in the interior of the sun, about 100,000,000° Celsius, and produce a brilliant fireball.
What happened to the atomic bomb used in WW2?
A second bomb was dropped on Nagasaki nine days later and Japan surrendered, ending World War Two. Since then, no power has used an atomic bomb in war, though many tests have been carried out on them. The smallest nuclear bomb now produced is about 20 times more powerful than the one dropped on Hiroshima.
What was the impact of the Hiroshima bomb on Japan?
In 1945 the first nuclear bomb was dropped on Hiroshima, Japan. This one small bomb killed about 150,000 people within the first four months. The immediate impact was 60,000 deaths but the rest were a result of radiation sickness.
How many people died from the atomic bomb on Japan?
This one small bomb killed about 150,000 people within the first four months. The immediate impact was 60,000 deaths but the rest were a result of radiation sickness. A second bomb was dropped on Nagasaki nine days later and Japan surrendered, ending World War Two.
Can a nuclear bomb be used in a war?
Since then, no power has used a nuclear bomb in war, though many tests have been carried out on them. The smallest nuclear bomb now produced is about 20 times more powerful than the one dropped on Hiroshima.