Lesson 41 of 84 · Sink and Float

Experiment⭐ 30 XP

Heavy and Light Things (Part 2)

🧪Lab Brief #41

Sink and Float.

🎯 Your mission

Run the experiment. Find out what really happens.

⚡ The twist

Nature loves to surprise the careful watcher.

🤯

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

Feathers are light and rocks are heavy. How do you know which is heavier?

Key Words

cold
heavy
light

Materials Needed

baking soda
cups
spoons
food coloring
plastic bottles
balloons

Safety First

Do not taste any materials.

Steps

Step 1 — Read

Have a grown-up read about Sink and Float to you.

Step 2 — Do

Drop a rock and a feather into water. Which one sinks? Which one floats?

Step 3 — Observe

Look closely! What do you see?

Step 4 — Record

Draw a picture of what you learned today.

Check Your Understanding

Question 1

1 of 3

What color do you get mixing blue and yellow?

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?”

🎯

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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