Use these targets, vocabulary, rubrics, examples, and score sheet with the instructor's approved lesson and procedure. This is an assessment companion, not a complete lesson or safety authorization.
Student lessons, data, and worked answers: Unit 05 learning pathway.
The student demonstrates the following:
Five science criteria plus separately reported integration (Page 3).
Project the Sun's image to find and track sunspots across weeks.
The student reads a star's stage from the H–R diagram (Page 4).
H–R placements, distance work, and dated sunspot sketches kept distinct.
You are making a decision, not adding up points. For each criterion, decide whether the work is Developing, Proficient, or Mastery — the column language tells you which. A criterion counts as mastered only when the student can both read a star's stage from evidence and observe the Sun using an approved image record or qualified, supervised session. Each student has three tokens per term; each token retries one rubric criterion. Approved accommodations, equipment failures, and approved absences are handled separately and do not consume these tokens.
Accept listed synonyms; use the distinction column to resolve near-matches.
| Canonical answer | Accepted synonyms | Common confusion / discriminator |
|---|---|---|
| The Sun & fusion | ||
| Nuclear fusion | combining light nuclei | Main-sequence hydrogen fusion releases energy; not a chemical fire |
| Nucleosynthesis | production of nuclei | Includes primordial, stellar, and explosive processes; not all elements share one origin |
| Neutron capture | s-process; r-process | Slow and rapid capture with decay form many nuclei beyond iron in different environments |
| The Sun's layers | core, radiative zone, convective zone | Energy is made in the core, then carried outward layer by layer |
| Photosphere & sunspots | visible surface; magnetic spots | Sunspots are cooler, darker regions; approved image datasets can show them |
| Solar safety | approved observation route | Never use unfiltered optics; live solar work requires a qualified operator and equipment-specific procedure |
| Stars, the H–R diagram & distance | ||
| Luminosity vs temperature | true brightness; color as temperature | Blue is hot, red is cool; luminosity is not how bright a star looks from Earth |
| H–R diagram | Hertzsprung–Russell diagram | Temperature and luminosity constrain stage; position alone does not give an exact age |
| Stellar life cycle by mass | main sequence → giant → remnant | Low mass ends as a white dwarf; high mass as a neutron star or black hole |
| Parallax & Cepheids | geometric distance; calibrated candle | Use the correct parallax angle; Cepheid distances need a calibrated relation and apparent brightness |
| Criterion | Developing | Proficient | Mastery |
|---|---|---|---|
| The Sun's structure & fusion | Thinks the Sun burns like an ordinary fire. | Says fusion but cannot locate it or name the Sun's layers. | Describes the Sun's layers and explains its energy as hydrogen fusion in the core. |
| Stellar properties | Confuses temperature, luminosity, and mass. | Names properties but misuses the assigned model. | Relates temperature, luminosity, and mass; uses assigned lifetime or radius models only under their stated conditions. |
| The H–R diagram | Cannot place a star using the axes. | Identifies a region but treats it as an exact age. | Plots temperature and luminosity, interprets main-sequence/giant/remnant regions, and states what position alone cannot determine. |
| Stellar life cycles & element origins | Assumes all elements form by ordinary stellar fusion. | Names endpoints but confuses production processes. | Connects mass-dependent life cycles to primordial nuclei, fusion, neutron capture, and dispersal; explains the iron-peak energy limit. |
| Distance & safe solar observation | Cannot use the distance data or identify a safe observation route. | Uses one distance method but cannot explain the observation limits. | Uses supplied parallax and calibrated Cepheid data, and records sunspots from approved image datasets or a qualified, supervised solar session. |
| Integration (cross-domain) | Makes no supported connection between the source and the science. | Uses the source but needs help connecting evidence, writing, or limitations to the science. | Independently connects History, Reading, and Writing using a cited source, appropriate evidence, a limitation, and a scientific explanation. |
The split between Proficient and Mastery is the stage is read from evidence: a star's color gives its temperature, and its place on the H–R diagram gives its stage. Ask “what does this star's color tell you, and where does it sit on the diagram?”
Read these before you grade. They show what Mastery and Developing actually sound like, plus the edge cases where you should coach rather than decide on the spot.
Student: ______________________________________ Date: _______________ Guide: _________________________
| # | Criterion | Decision | Notes |
|---|---|---|---|
| 1 | The Sun's structure & fusion | Dev / Prof / Mast | |
| 2 | Stellar properties | Dev / Prof / Mast | |
| 3 | The H–R diagram | Dev / Prof / Mast | |
| 4 | Stellar life cycles & element origins | Dev / Prof / Mast | |
| 5 | Distance & safe solar observation | Dev / Prof / Mast | |
| 6 | Integration (cross-domain) | Dev / Prof / Mast |
☐ No ☐ Yes — for criterion: __________
Tokens left this term after this session (choose one): ☐ 3 ☐ 2 ☐ 1 ☐ None left
Dev = Developing · Prof = Proficient · Mast = Mastery · Unsure between two levels? Circle the lower one and note what a re-do would need.