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Webquest · High School Physical Science · SPS4

Nuclear Radiation Webquest

Radiation, Decay Equations, Fission and Fusion, Half-Life and Nuclear Energy

Work through the stops in order. Each button opens in a new tab: finish that stop, answer on your webquest sheet, then come back to this page for the next one.

Start with Stop 1 ↓For teachers ↓
Students

How it works

1. Get your sheet

Your teacher gives you the webquest sheet (paper or digital). Every answer goes on it.

2. Open each stop in order

Each stop opens in a new tab. Use the sliders and buttons on that page — your answers come from what you see.

3. Come back here

Close the tab, tick Done, and open the next stop. Finished early with a partner? Play the bonus.

The webquest

Stops

  1. Stop 1 · about 12 min · your sheet: page 2, questions 1–5

    Nuclear Chemistry Unit Intro

    Read the radioactive breakfast, pick a big question, play two activities.

    Open Stop 1 The radioactive breakfastBig questionsExplore activities
  2. Stop 2 · about 8 min · your sheet: page 3, questions 6–13

    Simple Science Videos: Nuclear

    Watch three one-minute videos and fill in the tables.

    Open Stop 2
  3. Stop 3 · about 10 min · your sheet: page 4, question 14

    Vocabulary

    Flip the Word Wall cards and define 14 words in your own words.

    Open Stop 3 Word Wall (unit intro)Nuclear vocabulary
  4. Stop 4 · about 14 min · your sheet: page 5, questions 15–23

    Nuclear Part A: Radiation and Nuclear Equations

    Build a nucleus, fire the penetration tester, run the decay machine.

    Open Stop 4 Part 1: RadiationPart 2: Nuclear equations
  5. Stop 5 · about 12 min · your sheet: page 6, questions 24–30

    Nuclear Part B: Fission, Chain Reactions and Fusion

    Split U-235, run the chain reaction four ways, label the reactor, fuse two nuclei.

    Open Stop 5
  6. Stop 6 · about 14 min · your sheet: page 7, questions 31–39

    Nuclear Part C: Half-Life, plus the Lab Bench Decay Detective

    Run the half-life machine, solve all three problem types, then date a mystery isotope.

    Open Stop 6 Part 4: Half-lifeDecay Detective: Half-Life (Lab Bench)
  7. Stop 7 · about 12 min · your sheet: page 8, questions 40–44

    Nuclear Part D: The Nuclear Energy Debate

    Read the evidence chart, sort benefits and problems, build your argument.

    Open Stop 7
  8. Wrap-up · your sheet: page 8, questions 45–46

    Wrap-up: Solve the radioactive breakfast

    Go back to the radioactive breakfast at the top of the unit intro and explain, with what you learned, why it is safe to eat the banana and hang the smoke detector.

    Open the radioactive breakfast
  9. Bonus · for partners who are both finished

    Bonus: 1v1 HS Nuclear Radiation

    1. Only when you and a partner have both finished every stop.
    2. One computer, two players: Red uses the W A S D keys and Blue uses the arrow keys. It needs a keyboard, so it will not work on a phone.
    3. Press Enter the Arena, pick a game, and play to 3 wins.
    Open the 1v1 game
Teachers

For teachers

Post this link for your students

https://www.tobinscience.com/webquest-hs-nuclear.html

Students move through six free tobinscience.com resources in order: the Nuclear Chemistry unit intro, three one-minute Simple Science videos, the unit vocabulary, the full Nuclear section (Parts 1–5: a build-a-nucleus stability lab, a penetration tester, the dose chart, a decay machine that writes and checks every equation, the uranium-238 decay series, a fission simulation, a chain-reaction simulation with control rods and fuel, a label-the-reactor diagram, a fusion simulation with a temperature slider, the half-life machine, all three half-life problem types, a decay curve, the isotope table, the nuclear energy evidence chart and a claim-evidence-reasoning builder with the unit test's rubric), the Lab Bench Decay Detective, and a 1v1 review game for early finishers. Every answer comes from what the page shows, matching SPS4a–c.

SPS4 · Obtain, evaluate, and communicate information to explain the changes in nuclear structure as a result of fission, fusion and radioactive decay.
Time: about 80–85 minutes (two 45-minute periods, or one block)

What students need

  • One Chromebook or computer per student (the 1v1 bonus needs a keyboard and two students on one computer)
  • Headphones are optional (the three videos are about one minute each)
  • No student accounts or sign-ins; nothing to install

Every stop at a glance

Good to know

  • The Shield Tester and Half-Life Lab rounds, the balance-it and sort scores, the Lab Bench mystery half-life and the argument builder's town are randomized, so those answers vary. The simulation readouts (stability readouts, dose shares, decay-machine equations, the 14-step series, the fission count check, the chain-reaction verdicts, the fusion threshold, the half-life table, the evidence chart) are fixed, so those match the key.
  • Stop 1 activities award MeV points that are saved only on that device; students write their score on the sheet.
  • The decay machine lets students try decays a nucleus does not really do (carbon-14 + alpha). The equation still balances; the machine says what nature really does. That what-if is on purpose and the sheet asks for its verdict.
  • The chain-reaction simulation is random, so the exact per-generation counts differ each run; the key gives the verdicts (runaway, steady, shut down, fizzled), which are what the sheet asks for.
  • The 1v1 bonus is for pairs who have both finished. It is head-to-head review of the whole nuclear unit.
  • The nuclear page also has name-that-radiation, the label-the-tracks task, the isotope-for-the-job picker, endless mixed practice, worked examples, real-life cards, a myth-or-fact set and a 10-question practice bank that the webquest does not visit. They make a good warm-up the next day.
  • Short on time? Stops 1–3 make a good first day and Stops 4–7 a second day.
  • The printable student webquest and its answer key come with the Word / PDF webquest download. This page holds no answers, so it is safe to post.