Sound Vibrations in Solids
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Objective
I can used evidence from data to argue whether all solid things vibrate when they make sounds, even if I can't see the vibrations.
Part 1 of 4
Warm-up video
BBC Earth Science · 4:36
We don't generate video — this one is by BBC Earth Science on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
In the experiment, sand is sprinkled on a metal plate to visualize the vibration patterns when sound is produced.
- 2
The patterns revealed by the sand occur at a natural frequency of the metal plate, which contributes to the overall sound.
- 3
Each vibrating object has its own combination of natural frequencies, determined by its physical characteristics, forming a unique acoustic signature.
Part 3 of 4
Practice
12 questions
What does the sand reveal about the vibrating plate?
What is a natural frequency in the context of the metal plate?
Part 4 of 4
Exit ticket
Quick comprehension check
“Explain how the sand on the metal plate helps us to understand that the plate is vibrating when it makes a sound, even though we can't see the vibrations with our eyes.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
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