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CM 1 - Science Sound revision

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  • What is pitch? 🎶
    How high or low a sound is.
  • What unit measures loudness? 📏
    Decibels (dB).
  • What does low-pitched mean? 🎤⬇️
    The sound has slow vibrations.
  • What are control variables? 🎯
    Things you keep the same to make the test fair.
  • What is a fair test? ⚖️
    A test where only one thing changes.
  • What is the dependent variable? 📊
    The thing you measure.
  • Which has a high pitch: a whistle or thunder? 🐦
    A whistle.
  • What is the independent variable? 🧪
    The one thing you change on purpose.
  • What is a vibration? 🔁
    A quick back-and-forth movement that makes sound.
  • What happens when you put a pillow over a speaker? 🛏️🔊
    The sound becomes quieter (muffled).
  • What is volume? 🔊
    How loud or quiet a sound is.
  • All sounds are made by something vibrating. True or False? ✅
    True
  • What is sound? 🎧
    Sound is energy that travels to your ears.
  • What happens when you use a cone or amplifier? 📣
    The sound becomes louder.
  • What does high-pitched mean? 🎤⬆️
    The sound has fast vibrations.
  • Which has bigger vibrations: a loud sound or a quiet sound? 💥
    A loud sound.
  • What tool measures sound levels? 🎚️
    Sound level meter.
  • Which has a low pitch: a bird’s chirp or an elephant’s rumble? 🐘
    An elephant’s rumble.
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