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First Class science · A.2 · Waves and light

High and low pitch

Shorter strings vibrate faster and make higher-pitched sounds.

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  1. Omar and Ravi are curious. A short jump rope makes a high sound. A long one makes what kind of sound?

    • Higher pitch
    • No sound
    • Lower pitch (right)
  2. Priya plays a guitar with two strings: one short and one long. Which one makes a high sound?

    • Short string (right)
    • Long string
    • Thick string
  3. When Theo pulls a string tight, which one makes a higher sound — the short one or the long one?

    • Loose string
    • Long string
    • Short string (right)

Tip: Shorter strings vibrate faster and make higher-pitched sounds.

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