Worksheet

Design Information Transfer

Grade 4 - Science - Challenge Me

NameDate

  1. For a classroom code, which signal could transfer information using a pattern?

    • light reflects from the rope and enters the eye
    • crests farther apart
    • flag up, flag down, flag up
    • a silent object with no agreed meaning

  2. In the harbor warning, what information can this signal communicate: one long and one short flashlight flash?

    • smaller amplitude
    • no message can ever be sent
    • the pattern can stand for one planned message
    • the sender's lunch choice without a code

  3. Which design test best checks a light or sound code for the stage cue?

    • ask a partner to read the pattern without extra hints
    • judge only whether the signal looks interesting
    • assign a different short-long flash pattern to each message
    • uses only short and long flashes

  4. Which improvement would make the weather alert easier to understand?

    • remove the code key
    • make every signal identical
    • a quieter sound
    • add clear pauses between message patterns

  5. Why can light or sound be used for the team signal?

    • random noise always has one meaning
    • only written words can communicate
    • patterns of light or sound can be agreed to represent messages
    • signals work without a receiver

  6. For a museum exhibit, which signal could transfer information using a pattern?

    • a random color with no code
    • light reflects from the drum and enters the eye
    • a louder sound
    • three short flashlight flashes

  7. In the bus-line notice, what information can this signal communicate: one long and one short flashlight flash?

    • the pattern can stand for one planned message
    • the sender's lunch choice without a code
    • smaller amplitude
    • a quieter sound

  8. Which design test best checks a light or sound code for the garden reminder?

    • change every part of the code during the test
    • ask a partner to read the pattern without extra hints
    • coat the envelope with wax paper
    • uses one envelope and one coating material

  9. Which improvement would make the library pickup code easier to understand?

    • crests farther apart
    • make every signal identical
    • light reflects from the rope and enters the eye
    • add clear pauses between message patterns

  10. Why can light or sound be used for the trail message?

    • waves cannot carry any pattern
    • patterns of light or sound can be agreed to represent messages
    • signals work without a receiver
    • only written words can communicate
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