Share CM 1 - Science Sound revision
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What is sound? 🎧
Sound is energy that travels to your ears.
What is a vibration? 🔁
A quick back-and-forth movement that makes sound.
All sounds are made by something vibrating. True or False? ✅
True
What is volume? 🔊
How loud or quiet a sound is.
What is pitch? 🎶
How high or low a sound is.
Which has a high pitch: a whistle or thunder? 🐦
A whistle.
Which has a low pitch: a bird’s chirp or an elephant’s rumble? 🐘
An elephant’s rumble.
What unit measures loudness? 📏
Decibels (dB).
What tool measures sound levels? 🎚️
Sound level meter.
What does high-pitched mean? 🎤⬆️
The sound has fast vibrations.
What does low-pitched mean? 🎤⬇️
The sound has slow vibrations.
What is a fair test? ⚖️
A test where only one thing changes.
What is the independent variable? 🧪
The one thing you change on purpose.
What is the dependent variable? 📊
The thing you measure.
What are control variables? 🎯
Things you keep the same to make the test fair.
What happens when you put a pillow over a speaker? 🛏️🔊
The sound becomes quieter (muffled).
