Lesson Plan: Radioactive Decay | Nagwa Lesson Plan: Radioactive Decay | Nagwa

Lesson Plan: Radioactive Decay

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate the change in the activity of a radioactive sample after a given amount of time has passed.

Objectives

Students will be able to

  • use 𝑡=𝜏(2)ln in all permutations to relate 𝑡, the half-life of a radioactive isotope, to 𝜏, the mean lifetime of a nucleus of that isotope,
  • use 𝑡=(2)𝜆ln in all permutations to relate 𝑡, the half-life of a radioactive isotope, to 𝜆, the decay constant of that isotope,
  • use 𝜏=1𝜆 in all permutations to relate 𝜏, the mean lifetime of a nucleus of an isotope, to 𝜆, the decay constant of that isotope,
  • use 𝑁=𝑁𝑒ln() in all permutations, where 𝑁 is the number of atoms of a given radioactive isotope at time 𝑡, 𝑁 is the initial number of atoms, and 𝑡 is the half-life of the isotope,
  • use 𝑁=𝑁𝑒 in all permutations,
  • use 𝐴=𝐴𝑒ln() in all permutations, where 𝐴 is the activity of a given radioactive sample at time 𝑡, 𝐴 is the initial activity, and 𝑡 is the half-life,
  • use 𝐴=𝐴𝑒 in all permutations.

Prerequisites

Students should already be familiar with

  • alpha, beta, and gamma decay and neutron emission,
  • what half-life is,
  • activity and becquerels (Bq).

Exclusions

Students will not cover

  • the attenuation of radiation in solid materials,
  • any type of decay other than alpha, beta, gamma, and neutron emission,
  • fission reactions,
  • nuclear waste.

Download the Nagwa Classes App

Attend sessions, chat with your teacher and class, and access class-specific questions. Download Nagwa Classes app today!

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.