HS-PS1-8
The standard
Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.
Next Generation Science Standards
What this standard means
Students need to show, with diagrams or simple models, what happens inside an atom’s nucleus during fission, fusion, and radioactive decay. They should connect changes in protons and neutrons to new atoms or particles, and show that these nuclear changes release much more energy than chemical changes.
Mastery looks like a clear before-and-after model with labeled nuclei, emitted particles, and energy release. Students often mix up atoms and nuclei, treat gamma rays as particles with mass, or think fission and fusion are the same process. They also need help comparing energy scale without doing calculations.
Ways to teach it
- Use colored beads to model uranium fission, hydrogen fusion, alpha decay, beta decay, and gamma emission on labeled index cards.
- Prompt students to explain why burning coal and splitting uranium both release energy, but not from the same part of matter.
- Give four unlabeled nuclear diagrams and ask students to identify fission, fusion, alpha decay, beta decay, or gamma emission.
- Compare a nuclear power plant, the Sun, a smoke detector, and medical radiation treatment to the nuclear process each uses.
Plan a lesson for HS-PS1-8
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- MS-PS1-1
Develop models to describe the atomic composition of simple molecules and extended structures.
- HS-PS3-2
Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as either motions of particles or energy stored in fields.
- HS-PS1-4
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
- HS-ESS1-1
Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun's core to release energy that eventually reac...