Grade 2 · Science · Lesson 20

Discover How Sound Travels

Put your hand on your throat and say "ahhh." Did you feel it buzzing? That buzz is a vibration — a back-and-forth movement — and vibration is the starting point of every sound you have ever heard.

What this lesson teaches

1Explain that sound starts as a vibration
2Describe how sound travels from source to ear to brain
3Tell the difference between pitch and volume

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