- Science
Mission Objectives
Describe what's meant by radioactive decay
Describe the four types of nuclear radiation
Words and meanings to learn
radiation
energy emitted from a source, carried by a particle or wave
radioactive decay
when an unstable atomic nucleus emits radiation
alpha particle
a positively charged particle that consists of two protons and two neutrons emitted by the radioactive decay of some nuclei
beta particle
a high energy negatively charged electron emitted by the radioactive decay of some nuclei
gamma ray
a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei
Resources: Class presentation, handout, a Geiger Muller Tube and radioactive sources to show count rate (optional- if carried out a full risk assessment should be carried out to ensure safe storage and handling).
Handout: Explore the history of the discovery of radiation in terms of Becquerel and Curie. Describe the 3 main types of radiation. Use true and false questions to discuss the background and ionising radiation. Discuss and clarify any misconceptions.
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