Uranium 235 has a half-life of over 700 million years and is the fuel used in the atomic bomb dropped on Hiroshima, Japan. Pupils see the half-lives and decay rates of Carbon-14 and Uranium-238. They also take measurements of these two...

A mix of scientific details and background information about the well-known sites of radiation attacks or accidents. This topic may open up details that you may consider as sensitive, and could be upsetting to some pupils. This is a...

Students examine hydrothermal vents. In this ocean lesson, students identify changes in physical and chemical properties of sea water caused by hydrothermal vents.

In this atomic energy worksheet, students read about Linus Pauling, who spent years making the public aware of the dangers of nuclear weapons. They answer questions about his work and the social responsibility he took on which led to the...

Students study photosynthesis and chemosynthesis.  For this chemosynthetic lesson students explain the processes of these and define terms. 

Students analyze hydrothermal vents. In this hydrothermal vents lesson, students discover the effects of hydrothermal vents on tectonic plates. Students make model hydrothermal vents to understand how they form and operate.

Discusses lost nuclear weapons, the power of an atomic bomb, the bombing of Hiroshima and Nagasaki, the development of the atomic bomb, the making of the hydrogen bomb, the detonation of a hydrogen bomb by Russia in 1961, and the status...

Describes the history of the invention of the atomic bomb, its use in World War II against Japan, the impact on people who were targetted by it, the immediate and long-term impact on generations of people, the effect on communications,...

An indexing page which links to several pages of letters, diary excerpts, public reports, and personal correspondence relating to the use of the first atomic bomb. Includes letters and petitions drafted by scientists involved with the...

A magnitude 8.5 earthquake (such as the 1964 Good Friday earthquake in Alaska) releases about 1x1018 joules of energy. The atomic bomb exploded over Hiroshima released about 1.5x1013 joules of energy. How many Hiroshima bombs would one...