Radioactivity II

Basic Science JSS3 Third term

Theme: Science and development

Sub-theme: You and energy

WEEK   2

Radioactivity II

Performance objectives

Students should be able to:

  1. List three types of radiation and state their properties.
  2. State the uses of radiation.
  3. State the dangers in the use of radioactive rays.


Types of radiation

The types of radiation include alpha radiation, beta radiation gamma radiation, and X-radiation.

Alpha Radiation
Alpha radiation is a heavy, very short-range particle and is actually an ejected helium nucleus. Some characteristics of alpha radiation are:

    • Most alpha radiation is not able to penetrate human skin.
    • Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed.... View More

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