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Grade 1 · lesson 1 of 4

Find a vibration

Find a vibration using supplied evidence and a solved model.

About 12 minutes, plus any extended practice

Download the grade pack

Supplied materials

  • For younger learners, an adult may read each direction aloud; pointing, drawing and spoken explanations count as responses.
  • Paper, drawing space or a browser document.
  • Reference card A: repeated back-and-forth motion. Reference card B: disturbance heard after vibrations travel.
  • Assessment case 1: Which scientific label fits the specifically described step or feature? Supplied case: String moves back and forth.
  • Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Listener hears a ringing bell.
  • Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: Drum skin does not move.
  • Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Two beats mean begin.
  • Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: Ruler repeatedly moves sideways.
  • Assessment case 6: Which scientific label fits the specifically described step or feature? Supplied case: One clap means stop.

Learn the idea

Sound is produced by vibrating matter. A vibration is a repeated back-and-forth movement. Our cards describe motion; do not make loud sounds near anyone’s ears.

Vibration means repeated back-and-forth motion. Sound means disturbance heard after vibrations travel. Still means no described movement. Message means information conveyed by a signal.

For vibration, look for the clue “repeated back-and-forth motion.” For sound, look for “disturbance heard after vibrations travel.” More than one process can happen in a real situation. Answer about the one described in this question.

  1. Read or listen to the four science words and what each means. Say how the first two differ.
  2. Choose two of the short cases. Point to the clue that helps you choose a science word for each one. You may draw or say your answer.
  3. Answer each practice question. Say which clue helped you, then check the explanation.
  4. Use the extra task to make two examples that show different science words. Draw or say what makes each one fit.
Worked example

See the method in action

Worked reference-card problem: a card states “repeated back-and-forth motion”; a second states “disturbance heard after vibrations travel.” The first fits vibration and the second fits sound. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case.

Your turn

Check your reasoning

Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.

Helpful tips
  • Use the feature “repeated back-and-forth motion” to justify vibration; do not sort by the name alone.
  • Distinguish sound (disturbance heard after vibrations travel) from a different process occurring in the same situation.
Which scientific label fits the specifically described step or feature? Supplied case: String moves back and forth.

Feedback appears here after you check. This is practice, not a graded school assessment.

See the answer and explanation

vibration

The answer is vibration. In the notes, it means “repeated back-and-forth motion.” Sound is produced by vibrating matter. A vibration is a repeated back-and-forth movement. Our cards describe motion; do not make loud sounds near anyone’s ears.

Take it further

Create one new case showing vibration and one showing sound. Expected: the first explicitly shows “repeated back-and-forth motion”; the second explicitly shows “disturbance heard after vibrations travel.” Explain the distinction by drawing, speaking or writing. A label without a matching feature is incomplete.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.

More practice: try new cases

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

More practice: try new cases
1. Which scientific label fits the specifically described step or feature? Supplied case: Listener hears a ringing bell.
Need a hint?
  • Look for the described feature: disturbance heard after vibrations travel.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
2. Which scientific label fits the specifically described step or feature? Supplied case: Drum skin does not move.
Need a hint?
  • Look for the described feature: no described movement.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
3. Which scientific label fits the specifically described step or feature? Supplied case: Two beats mean begin.
Need a hint?
  • Look for the described feature: information conveyed by a signal.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.

Your choices are temporary. Feedback appears after you check all the answers.

Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.

Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.