Lesson 8 of 10 · Sink and Float

Lesson⭐ 30 XP

Air Fills Balloons

🧪Lab Brief #8

Sink and Float.

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

Nature loves to surprise the careful watcher.

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Mind = Blown

🔬 The more you look, the more nature shows you.

🔮

Make a hypothesis first

Before you start: write down what you think will happen, and why.

What You'll Learn

When you blow up a balloon, you fill it with air. Air is a gas!

Key Words

Tap a word to see its definition.

Steps

Step 1 — Read

Say the vocabulary words out loud. Can you repeat them?

Step 2 — Observe

Use your eyes, ears, and hands to explore. What do you notice?

Step 3 — Record

Color a picture to show what happened.

Check Your Understanding

Question 1

1 of 2

What is inside a balloon you have blown up?

How sure are you going to be?😐 maybe

🌍

Where you see this in real life

This shows up in your everyday life more than you'd think.

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Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week — even a tiny one.

👨‍👩‍👧

For the dinner table

“What's the most surprising thing you learned today?”

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Next Smart Experiment

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

⚡Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

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Ready?