Lesson 22 of 84 · Forces

Simulation⭐ 30 XP⚡ Spark Lab

Marble Races

🧪Lab Brief #22

Marble Races.

🎯 Your mission

Push the limits. See what changes.

⚡ The twist

Energy never disappears — it just hides somewhere else.

🤯

Mind = Blown

🎢 You feel weightless on a roller coaster because you and the seat are falling at the same speed.

🔮

Make a hypothesis first

Before you start: which will move faster, and why?

What You'll Learn

When you drop something, it falls down. That is gravity at work!

Key Words

fall
bounce
spin

Steps

Step 1 — Read

Talk about Forces with a grown-up. What do you already know?

Step 2 — Do

Try pulling a wagon with one hand, then two hands. Which is easier?

Step 3 — Observe

What happened? Tell a grown-up what you noticed.

Step 4 — Record

Tell a grown-up your favorite part of the activity.

Check Your Understanding

Question 1

1 of 3

What happens when you drop a ball?

How sure are you going to be?😐 maybe

🌍

Where you see this in real life

You use this every time you flip a light switch, ride a bike, or kick a ball.

🏆

Stretch Challenge

Try this in real life this week.

Time how long a small ball rolls down something, then change the slope and try again.

👨‍👩‍👧

For the dinner table

“Show me something at home that uses this kind of energy.”

🎯

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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