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Radioactivity Review

You will be shown an image of a radioactivity decay particle and the material that stops its penetration. Identify the correct type of radiation shown in each image.

  1. ___________ can be absorbed by very dense materials, but thick layers of concrete or lead can stop its penetration.
    gamma penetration
    1. Alpha radiation
    2. Beta radiation
    3. Gamma radiation
    4. Omega radiation

    Answer: Gamma radiation. It can be absorbed by very dense materials but thick layers of concrete or lead can stop its penetration.


  2. ___________ can be stopped by slightly thicker substances, like a sheet of aluminum.
    beta penetration
    1. Alpha radiation
    2. Beta radiation
    3. Gamma radiation
    4. Omega radiation

    Answer: Beta radiation. It can be stopped by slightly thicker substances, like a sheet of aluminum.


  3. ___________ can be stopped by a thin sheet of paper.
    alpha penetration
    1. Alpha radiation
    2. Beta radiation
    3. Gamma radiation
    4. Omega radiation

    Answer: Alpha radiation. It can be stopped by a thin sheet of paper.


    4. You've completed this review of radioactive decay particles and how deeply they can penetrate different types of matter! If you had to try again on 1 or more questions, please go back and review the lesson again before continuing.