How Sound Travels

Lab Brief #6

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

Constraints make you more creative, not less.

What you'll learn

Sound is a vibration that travels through matter as a wave. It cannot travel through a vacuum. Sound travels fastest through solids and slowest through gases.

Key words

vibration
A fast back-and-forth movement that starts a sound.
vacuum
A space with no particles in it, which sound cannot cross.

Make a hypothesis first

Before you test: how many tries until it works?

Say your guess out loud — then find out if you were right.

Step 1 of 4 · Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 of 4 · Do

Conduct a design challenge: build a car powered only by a balloon. Measure how far it travels and iterate on your design at least twice.

Step 3 of 4 · Observe

Use your senses (except taste) to describe what you notice.

Step 4 of 4 · Record

Write a summary of your findings in 3-5 sentences.

Question 1 of 3

Can sound travel through a vacuum?

How sure are you?😐 maybe

Question 2 of 3

What is sound?

How sure are you?😐 maybe

Question 3 of 3

What type of wave is sound?

How sure are you?😐 maybe

Mind = blown

🌉 The Eiffel Tower can grow 6 inches taller in summer because metal expands when hot.

Nice work!

You got 0 of 3 right.

Next: Asking a Question You Can Actually Test All lessons

🎯

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

✨ More to explore

🌍 Where you see this in real life: Your phone, your bike, your shoes — all designed with this idea.

🏆 Stretch challenge (try it this week): Build something — anything — out of stuff in your recycling bin.

👨‍👩‍👧 For the dinner table: “What's something around the house you'd redesign — and how?”

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