Lesson 81 of 84 · Engineering and Design
Experiment⭐ 30 XP🛠️ Engineer ShopSound: Pitch and Volume (Part 4)
Engineering and Design.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
Every solution creates a new problem. That's good — that's the next project.
Mind = Blown
🌉 The Eiffel Tower can grow 6 inches taller in summer because metal expands when hot.
Make a hypothesis first
Predict: which design will hold the most weight?
What You'll Learn
Sound waves have properties including amplitude (loudness), frequency (pitch), and wavelength. Higher frequency means higher pitch. Greater amplitude means louder sound.
Key Words
- criteria
- iteration
Materials Needed
- markers
- popsicle sticks
- pennies
- plastic wrap
- cardboard
Safety First
- Use materials only as directed in the experiment.
Steps
Study the diagram and label the parts you recognize.
Build a working anemometer using paper cups and straws. Calibrate it by counting rotations in a known wind speed.
Observe what happens and describe it in detail.
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3Can sound travel through a vacuum?
Where you see this in real life
Every bridge, building, and gadget you've ever used started with this.
Stretch Challenge
Try this in real life this week.
Find something that's broken at home and try to figure out *why* it broke.
For the dinner table
“What's something around the house you'd redesign — and how?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
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