Radioactive decay and types of radiation

Radioactive decay and types of radiation Quiz

IB MYP Physics: Quiz

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5 questions, one answer each

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  1. 1. Which radiation is a fast-moving electron?

    • A. Alpha
    • B. Gamma
    • C. Neutron
    • D. Beta

  2. 2. Which statement about gamma rays is correct?

    • A. They are strongly ionising
    • B. They are an electromagnetic wave with no charge
    • C. They are deflected by a magnetic field
    • D. They are stopped by paper

  3. 3. A source gives a count rate of 55 counts per minute. The background is 15 counts per minute. What is the corrected count rate?

    • A. 15 counts per minute
    • B. 70 counts per minute
    • C. 40 counts per minute
    • D. 55 counts per minute

  4. 4. Radon-222 (Z = 86) decays by alpha emission. What is the mass number of the new nucleus?

    • A. 226
    • B. 218
    • C. 222
    • D. 220

  5. 5. What changes in a nucleus during beta decay?

    • A. A neutron changes into a proton
    • B. A proton changes into a neutron
    • C. Two protons are lost
    • D. Nothing changes

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