Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. How radioactive decay happen?
   • Radioactive decay is a random process.
2. What is the meaning of the term 'half-life'?
   • Half life is the amount time taken for a radioacitve material to reduce it radioactive emissons by half.
3. How is the concept of half-life related to radioactive decay?
   • Radioactive activity decreasses by half at each half life.
4. How would the half-life of a radioactive isotope be determined from given information?
   • Use divisions of half to determine half lifes from given data.
5. How would the net decline of radioactive emission after a given number of half-lives be expressed?
   • Should be expressed as a ratio.