Lesson Worksheet: Radioactivity Science

In this worksheet, we will practice describing the radiation produced by decaying atomic nuclei.

Q1:

Which of the following statements correctly describes the forces that act on the particles in the nucleus of an atom?

  • AThere are no forces on the particles.
  • BThere are only repulsive forces on the particles.
  • CThere are attractive and repulsive forces on the particles.
  • DThere are only attractive forces on the particles.

Q2:

Which of the following statements correctly describes the possible compositions of the radiation emitted by unstable atomic nuclei decaying?

  • AThe radiation emitted by unstable atomic nuclei decaying consists only of electromagnetic waves.
  • BThe radiation emitted by unstable atomic nuclei decaying includes particles and electromagnetic waves.
  • CThe radiation emitted by unstable atomic nuclei decaying consists only of particles.

Q3:

Which of the following statements correctly describes what gamma radiation consists of?

  • AGamma radiation consists of particles.
  • BGamma radiation consists of both particles and electromagnetic waves.
  • CGamma radiation consists of electromagnetic waves.

Q4:

Which of the following atomic nuclei is more likely to be unstable?

  • AA nucleus with a high proportion of neutrons
  • BA nucleus with a low proportion of neutrons
  • CA nucleus with equal numbers of neutrons and protons

Q5:

Which of the following does an atomic nucleus become if it loses only neutrons when it undergoes radioactive decay?

  • AA different isotope of the element it was before the decay
  • BA different element from the one it was before the decay

Q6:

Which of the following statements correctly describes what alpha radiation consists of?

  • AAlpha radiation consists of both particles and electromagnetic waves.
  • BAlpha radiation consists of particles.
  • CAlpha radiation consists of electromagnetic waves.

Q7:

Which of the following statements correctly describes what beta radiation consists of?

  • ABeta radiation consists of electromagnetic waves.
  • BBeta radiation consists of particles.
  • CBeta radiation consists of both particles and electromagnetic waves.

Q8:

Which of the following statements about spontaneous changes to the compositions of atomic nuclei of elements is correct?

  • AThe composition of an atomic nucleus can spontaneously change only for atoms of certain elements.
  • BThe composition of an atomic nucleus can spontaneously change for atoms of any element.
  • CThe composition of an atomic nucleus cannot spontaneously change for atoms of any element.

Q9:

Which of the following statements about the prediction of radioactive decay of an unstable atomic nucleus is correct?

  • AThe time at which an unstable atomic nucleus will decay cannot be predicted.
  • BThe time at which an unstable atomic nucleus will decay can be predicted.

Q10:

Which of the following is a correct statement about the stability of atomic nuclei?

  • AAn atomic nucleus that is stable cannot spontaneously become unstable.
  • BAn atomic nucleus that is stable can spontaneously become unstable.

This lesson includes 15 additional questions for subscribers.

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