Radioactivity: how it was discovered, definition of radioactivity and radiation and examples of radioactive elements.
An explanation of radioactive decay in general. Goes into greater details about alpha decay.
Reviews the definition and discovery of radioactivity and examples of radioactive elements.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
A biography of famous physicist Henri Becquerel, who discovered radioactivity.
A biography of famous chemist and physicist Marie Curie, who coined the term "radioactivity" and discovered the radioactive elements polonium and radium.