Science/History Class 101:Nuclear Weapons and bombs

By: A Smart 5th Grader



       DonŐt you wish America could be first at just one thing.  Well I am going to tell you there is one thing that America was first at.  This report will tell you what it is, how it works and World War 2. 

What is it?

       What is a Nuclear Weapon?  According to a nuclear weapon is a weapon that has a big explosion after it hits its target.  ( To me a nuclear bomb is more common than a weapon.


   What kinds of Nuclear Testing are there?  According to there are three kinds of testing.  They areÓ Atmospheric testing designates explosions, which take place in or above the atmosphere. Generally these have occurred as devices detonated on towers, balloons, barges, islands, or dropped from airplanes. A limited number of high altitude nuclear explosions have also been conducted, generally fired from rockets. Nuclear explosions which are close enough to the ground to draw dirt and debris into their mushroom cloud can generate large amounts of nuclear fallout due to irradiation of the debris. High altitude nuclear explosions can generate an electromagnetic pulse, and charged particles resulting from the blast can cross hemispheres to create an auroral display.  Underwater testing results from nuclear devices being detonated underwater, usually moored to a ship or a barge (which is subsequently destroyed by the explosion). Tests of this nature have usually been conducted to evaluate the effects of nuclear weapons against naval vessels (such as in Operation Crossroads), or to evaluate potential sea-based nuclear weapons (such as nuclear torpedoes or depth-charges). Underwater tests close to the surface can disperse large amounts of radioactive water and steam, contaminating nearby ships or structures.

Underground testing refers to nuclear tests which are conducted under the surface of the earth, at varying depths. Underground nuclear testing made up the majority of nuclear tests by the United States and the Soviet Union during the Cold War; other forms of nuclear testing were banned by the Limited Test Ban Treaty in 1963. When the explosion is fully contained, underground nuclear testing emits a negligible amount of fallout. However, underground nuclear tests can "vent" to the surface, producing considerable amounts of radioactive debris as a consequence. Underground testing can result in seismic activity depending on the yield of the nuclear device and the composition of the medium it is detonated in, and generally result in the creation of subsidence craters.[1] In 1976, the United States and the USSR agreed to limit the maximum yield of underground tests to 150 kt with the Threshold Test Ban Treaty.  ( I didnŐt know that there were so many kinds of nuclear testing.


         Do you know what the first nuclear bomb start out as?  WeŐll According to it only started out as a fireball.  ( That is so cool I didnŐt know that.  It would be cool to have a nuclear fireball. 




Tests names and Dates

         Do you know who the first country was to successfully invent a nuclear bomb?  Well according to the United States of America.  ( That is so cool.  I didnŐt know that we were the first country to invent a nuclear weapon. 


       What was the first nuclear weapon called?  Well according to the first project was called the Manhattan Project.  ( That is the weirdest name for a project that might change the world.      

         What was the first nuclear test called?  According to the first nuclear test was called the "Trinity.Ó ( That is a weird name for a test that will change the world.


       When was the first nuclear test?  According to on July 16, 1945 the first nuclear test.  ( That is so cool that is the same day as my brotherŐs birthday.


       Where was the first nuclear weapon tested?  According to the first nuclear weapon was tested in Alamogordo, New Mexico.  ( That means it was tested in the U.S.A.  That is so cool.  I didnŐt know that is was tested in the U.S.A. 


       What were the first fission weapons called?  According to the first fission bomb was called "atomic bombs.Ó  ( I did not know that.  It is so cool.








How it Works

       How does a nuclear weapon work?  According to how it works is it hits the ground and it has a big explosion.  ( That is so cool I wish we could have built the first one.  Well look at paragraph 1 of the heading Test names and Dates.  


       Do atomic bombs have layers?  Well according to yes Ňatomic bombsÓ have three layers the core is fission material, the next layer is non-fission material, and the outside is just metal.  ( That I did not know.  That is so cool. 


World War 2

       How many people did the first bombs kill?  Well according to ŇThe bombs killed as many as 140,000 people in Hiroshima and 80,000 in Nagasaki by the end of 1945.Ó  ( That means we killed 220,000 People with only two bombs.


       Were the first bombs dropped in the same place?  Well according to they were not dropped in the same place they were dropped in different places.  ( I thought if we wanted to attack we would drop them in the same place. 


       How many bombs were dropped in Japan?  According to there were two bombs dropped in Japan.  ( That so cool.  I wish they would have dropped one on my sister. (just kidding)


         Where were the first bombs dropped?  Well according to the first two bombs were dropped in Hiroshima and Nagasaki, Japan.  That is where I am from.  That is very rude.   




       I hope you liked this report.  It was so much fun researching this topic.  Thank-You.







Nuclear Weapons

April 30, 2008

This article has the history of nuclear testing.  Another thing this article has is great photos of testing and other things.