Lesson 25 of 30 · Forces

Lesson⭐ 30 XP⚡ Spark Lab

Friction Helps You Walk

🧪Lab Brief #25

Friction Helps You Walk.

🎯 Your mission

Understand the idea. Then look for it everywhere.

⚡ 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

Friction helps you walk. Without friction, your feet would slip on the floor!

Key Words

Tap a word to see its definition.

Steps

Step 1 — Read

Look at the new words. Can you say each one?

Step 2 — Do

Push a toy car across the carpet, then across a smooth floor. Measure how far it goes each time.

Step 3 — Observe

Watch carefully. What happens?

Step 4 — Record

Draw and write about what you learned.

Check Your Understanding

Question 1

1 of 3

What kind of surface has the most friction?

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.

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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.”

🎯

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Ready?