Lesson 63 of 84 · Sink and Float

Experiment⭐ 30 XP

What Sinks? What Floats? (Part 3)

🧪Lab Brief #63

Sink and Float.

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ 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

Wood floats in water, but a rock sinks. Heavy things often sink.

Key Words

liquid
water
ice

Materials Needed

cups
spoons
food coloring
plastic bottles
balloons
measuring cups

Safety First

Use materials only as directed in the experiment.
Keep small objects away from young children.

Steps

Step 1 — Read

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

Step 2 — Do

Touch ice and watch it change. What happens when it gets warm?

Step 3 — Observe

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

Step 4 — Record

Color a picture to show what happened.

Check Your Understanding

Question 1

1 of 3

What happens when ice gets warm?

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.

🏆

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.

🖨️

Checkout complete lesson on Sink and Float for Pre-School

Get the full Sink and Float track as a printable PDF — all lessons, worksheets, and answer keys.

View in Shop

Done with science? Try something else

🎮Science Games 🔢Math 📖Flashcards 🖨️Print Worksheet 💻Coding 🛍️Shop 🎲I'm Bored