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1st grade · Science · Unit 6 of 7

Signals Far Away

Use light and sound to send messages.

What your child practices

Practices how light and sound can carry a message over a distance, from flashlights and whistles to drums and signal flags, and how to design a simple signal.

California Content Standards learning standard: 1-PS4-4 · designing devices that use light or sound to communicate over a distance

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    A fire truck uses lights and a siren to…

    • warn people
    • sleep
    • sing songs
    • make food

  2. Question 2

    Which signal can a friend see from a hill?

    • A soft hum
    • A small whisper
    • A quiet clap
    • A bright flag

  3. Question 3

    Two cups and a string make a…

    • drum
    • lamp
    • cup phone
    • mirror

  4. Question 4

    It is dark. Which signal works best?

    • A painted sign
    • A hand wave
    • A flag
    • A flashlight

  5. Question 5

    Which tool sends a light signal?

    • A flashlight
    • A whistle
    • A drum
    • A bell

  6. Question 6

    A cup phone works best when the string is…

    • wet and tangled
    • pulled tight
    • cut in half
    • loose and floppy

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