Worksheet

Waves, Light, and Sound

Grade 4 - Science - On Level

NameDate

  1. Signal test: a model of rope waves shows longer wavelength. What observation matches that wave model?

    • crests closer together
    • crests farther apart
    • shorter ripples
    • a louder sound

  2. Observation model: which model explains how a student sees the object making water waves in a tray?

    • light reflects from the tray and enters the eye
    • sound enters the eye and becomes light
    • light reaches the object but never enters the eye
    • light enters the eye before reaching the object

  3. Observation model: how could the signal "four mirror flashes" transfer information?

    • the pattern is random and not agreed on
    • the signal changes every time it is sent
    • the receiver uses a different code for the same pattern
    • the flash count can stand for a number

  4. Light path model: which question is about the wave pattern in ripples in a pond?

    • How does larger amplitude change what is observed?
    • How does the material's color change the circuit?
    • Which signal code sends the clearest message?
    • How does reflected light reach the eye?

  5. Wave model: which evidence would support a light-reflection model?

    • sound waves enter the eye as light
    • an object is seen only when light from it reaches the eye
    • the object is seen equally in total darkness
    • light reaches the eye without interacting with the object

  6. Wave model: a model of rope waves shows longer wavelength. What observation matches that wave model?

    • crests farther apart
    • shorter ripples
    • a louder sound
    • taller ripples

  7. Light path model: which model explains how a student sees the object making ripples in a pond?

    • light enters the eye before reaching the object
    • sound enters the eye and becomes light
    • light reaches the object but never enters the eye
    • light reflects from the water and enters the eye

  8. Observation model: how could the signal "red-blue-red light flashes" transfer information?

    • the receiver uses a different code for the same pattern
    • the color pattern can transfer a warning
    • the signal changes every time it is sent
    • the pattern is random and not agreed on

  9. Light path model: which question is about the wave pattern in rope waves?

    • How does the material's color change the circuit?
    • Which signal code sends the clearest message?
    • How does longer wavelength change what is observed?
    • How does reflected light reach the eye?

  10. Signal test: which evidence would support a light-reflection model?

    • sound waves enter the eye as light
    • light reaches the eye without interacting with the object
    • the object is seen equally in total darkness
    • an object is seen only when light from it reaches the eye
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