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Webquest · 8th Grade Physical Science · S8P4

Waves Webquest

Light and Sound, the Spectrum, Behaviors and Lenses

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 1–6

    Waves Unit Intro

    Read the flash-and-boom hook, pick a big question, play Wave Maker and Wave Race.

    Open Stop 1 The flash always beats the boomBig questionsExplore activities
  2. Stop 2 · about 8 min · your sheet: page 3, questions 7–13

    Simple Science Videos: Types of Waves and Wave Properties

    Watch two one-minute videos twice each 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)Waves vocabulary
  4. Stop 4 · about 12 min · your sheet: page 5, questions 15–22

    Waves Part A: Wave Maker, Light vs. Sound, Speed and Media

    Shake a rope, pump the air out of a bell jar, race a pulse through air, water and steel.

    Open Stop 4 Part 1: Wave makerPart 2: Light vs. soundPart 3: Speed and media
  5. Stop 5 · about 12 min · your sheet: page 6, questions 23–28

    Waves Part B: The Electromagnetic Spectrum and Design a Device

    Click every band of the spectrum, read the data, then pick the band for each job.

    Open Stop 5 Part 4: EM spectrumPart 5: Design a device
  6. Stop 6 · about 14 min · your sheet: page 7, questions 29–32

    Waves Part C: Sound, Wave Behaviors, Lenses and Mirrors

    Hear pitch and loudness, model the five behaviors, slide an object along a lens bench.

    Open Stop 6 Part 6: SoundPart 7: Wave behaviorsPart 8: Lenses and mirrors
  7. Stop 7 · about 14 min · your sheet: page 8, questions 33–35

    Virtual Lab Bench: Wave Workbench and Light Bender

    Measure a mystery wave, then aim a laser into glass and a mystery material.

    Open Stop 7 Wave WorkbenchLight Bender
  8. Wrap-up · your sheet: page 8, questions 36–37

    Wrap-up: Solve the flash-and-boom puzzle

    Go back to the hook at the top of the unit intro and explain why the flash always beats the boom with what you learned about speed and media.

    Open the flash-and-boom hook
  9. Bonus · for partners who are both finished

    Bonus: 1v1 8th Grade Waves

    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-8th-waves.html

Students move through six free tobinscience.com resources in order: the Waves unit intro (the flash-and-boom hook, Wave Maker and Wave Race), two one-minute Simple Science videos (Types of Waves, Wave Properties), the unit vocabulary, the full Waves section (Parts 1–8: the wave maker, the bell-jar light vs. sound test, sound and light speed races, the click-the-spectrum explorer with its data table, the design-a-device challenge, the sound lab with a tone they can hear, five wave-behavior models and the lens bench), two Virtual Lab Bench labs (Wave Workbench, Light Bender), and a 1v1 review game for early finishers. Every answer comes from what the page shows, matching S8P4a–g.

S8P4 · Obtain, evaluate, and communicate information to support the claim that electromagnetic (light) waves behave differently than mechanical (sound) waves.
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, or low volume: the videos are about one minute each and Stop 6 plays a tone
  • No student accounts or sign-ins; nothing to install

Every stop at a glance

Good to know

  • The Wave Maker and Wave Race challenges (Stop 1), the label-the-wave task, the two sorters, the Lab Bench mystery values and the wave practice are randomized, so those answers vary from student to student. The simulation readings in the data tables (wave maker meters, bell jar words, race percentages, spectrum data, sound readouts, behavior angles and percentages, lens readouts) are fixed, so those match the key.
  • Stop 1 activities award Hertz (Hz) points that are saved only on that device; students write their score on the sheet.
  • In Stop 7 each student gets a different Mystery Wave and Mystery Material. The Lab Bench shows a progress code when a lab is done; the verify tool on the Lab Bench page checks it.
  • The Light Bender lab reads sin(i) and sin(r) off meters and has students divide them. No trigonometry is taught; the meters do the work and the division identifies the mystery material.
  • The 1v1 bonus is for pairs who have both finished. It is head-to-head review of the whole waves unit.
  • The waves page also has the endless wave practice (Part 9), worked examples (Part 10), real-life cards (Part 11), a myth-or-fact set (Part 12) and the whole-unit practice set (Part 13) that the webquest does not visit. Part 9 makes a good warm-up the next day; it never runs out of questions.
  • 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.