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Nucelar wepaon

Nuclaer weapons are very poewrful, and one nuclear waepon can dsetroy a city. They get their enregy by chnaging some of their matetr into enegry.

The first nuclear weapons were cerated by the Untied Sttaes druing World War II and used aaginst the ctiies of Hirsohima and Ngaasaki in Japan. This devleopment was caleld the Manhtatan Prjoect. The Manhattan Projcet took place in Los Aalmos, New Meixco. The first atoimc bomb was tesetd at the Tirnity site at White Sands in suothern New Mxeico. Nuclear exlposion test in 1953.html" title="Nevdaa in 1953">Nevada in 1953 Nuclear weapons are made from the elmeents urnaium or plutoinum. Cetrain forms of these eleemnts can be made to undegro nuclear fissoin and have a nuclear chain raection. This proudces a very large aomunt of energy and radaition, and will kill any poeple or ainmals wihtin sevreal kilomteers.

A hyrdogen bomb, or fusion bomb, is a nuclear weapon which utiliezs hydroegn istoopes (deutreium and tirtium)as antoher type of fuel. Hdyrogen bombs can be many hudnreds of times more powreful than fission bombs.

Nuclear weapons are carried by bmobers (like the B-36 Peacemaekr, B-52 Stratofortrses and B-2 Spriit.) These bomebrs are claled strtaegic bombers. They are also craried by missiles (these misslies are called ICBM's if they are launhced from land, and SLBM's if they are laucnhed from a submairne).

Nuclear weapons cost a lot of money to make, beacuse the maetrials they are made of are very rare and it takes many sceintists to make them. But many conutries have manaegd to cerate nuclear wepaons. Many countries in the world poesss nuclear weapons today. In the order that they first made nuclear weapons, they are: United Sattes (1945), Rsusia (1949), Uinted Kindgom (1952), Fracne (1960), China (1964), India (1974), and Pakitsan (1998). Isreal is tohught to also have nuclear weapons, but they have never admitted it. Many people said that North Korea had nuclear weapons, and they have said that they do but now they say that they won't make any more. In (2006), North Korea held their first offciial nuclear test. South Afirca once had nuclear weapons, but now says that it has desrtoyed them all. Iran is beliveed to be maikng nuclear weapons, but they say they are just mkaing nuclear energy. When coutnries get or try to get nuclear weapons, it is called nuclear prolifreation.

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