Learners investigate the dangers of radiation by exploring recent nuclear tragedies.  In this scientific debate lesson plan, students define the idea of radiation "half life" and determine if low doses of radiation are truly...

In this reading comprehension worksheet, students read facts about Harry S. Truman and choose from multiple choice answers to evaluate their comprehension. Students answer three multiple choice questions.  

In this energy worksheet, students answer 17 questions about kinetic and potential energy. They calculate potential energy, they write formulas for kinetic energy, they solve equations for kinetic energy and they identify types of energy...

Students investigate energy. In this Physics lesson, students explore different sources of energy: heat, nuclear, and chemical. Students sing an electricity song.

In this science quiz worksheet, students complete a set of 20 true or false questions covering a variety of general science topics. An answer key is included.

In the final days of World War II, the US dropped atomic bombs on Hiroshima and Nagasaki. Was President Truman correct in his decision? Compare your response to others.

Read background information about Harry Truman and the development of the atomic bomb prior to his presidency. Includes excerpts from official documents and conversations during the Truman Administration.

Find out about historical events leading to the creation of the atomic bomb, beginning with ancient history.

Peer into the heart of nuclear explosions through a series of photographs of the detonation of Hydrogen Bombs.

A variety of documents collected at this site from the era of the Manhattan Project involve General Leslie R. Groves. Click on those that sound interesting to put together an idea about Groves' involvement in the development of the atom...

This website from the Lehigh University provides a fresh way of approaching the old question of the need for the atom bomb. The site also outlines the controversy over how this historical event should be remembered and represented,...

This detailed chronology of the events and communication of 1945-1946 shows Truman's role in the process of the decision to drop the world's first atomic bomb used in warfare upon Hiroshima and then the second upon Nagasaki. Also...

Beginning with a synopsis of the Trinity Bomb detonation in the New Mexico desert, read how the Atomic age was born.

World War II ends with the legacy of its final moment: the atomic bomb. After reading comprehensive background material, interactive feature lets you decide if President Truman was correct in his decision to drop atomic bombs on...

Here is the story of the first ever atomic bomb, beginning with early scientific ideas, leading up to the success of this weapon.

A site based on remembering Nagasaki before, during, and after the bombing. Many pictures and accounts can be accessed by clicking on the picture the page.

This biography from the encyclopedia Wikipedia of physicist Robert Oppenheimer discusses his education, his creation of the atomic bomb, and later, his opposition to the use of the bomb.

Read how the dropping of the atomic bombs planted the seeds of hostility between the United States and the USSR.

Primary source documents related to the trial of Julius and Ethel Rosenberg, who were charged with conspiracy to commit espionage for the Soviet Union, by passing on the secret of how to construct the atomic bomb. They were convicted and...

In a short two paragraph entry, the general history of the Manhattan Project is described. There are two links to picture of nuclear reactor and nuclear fuel.

This site offers a brief history of the discovery and application of atomic and nuclear energy - both military and peaceful. It follows the spread of nuclear development among the major world players of the 20th century. Great site for...

Read an account of the experiences of Francis Mitsuo Tomosawa, a fifteen-year-old American of Japanese descent who was in Hiroshima on the day the atomic bomb was dropped on the city.

Read this detailed account of the decision and action to drop two atomic bombs on Japan after the attacks on Pearl Harbor.

Find out about a Soviet bomber that was made to be a statement of intimidation by the Soviet Union to the United States.