Lesson 4 of 30 · Forces

Lesson⭐ 30 XP⚡ Spark Lab

Wheels Reduce Friction

🧪Lab Brief #4

Wheels Reduce Friction.

🎯 Your mission

Understand the idea. Then look for it everywhere.

⚡ The twist

Energy never disappears — it just hides somewhere else.

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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

Wheels reduce friction and make it easier to move heavy objects.

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

Test a magnet on 10 objects around your house. Make a list of what sticks and what doesn't.

Step 3 — Observe

Compare what happened to what you predicted.

Step 4 — Record

Tell the class one thing you learned today.

Check Your Understanding

Question 1

1 of 3

What does friction do?

How sure are you going to be?😐 maybe

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Where you see this in real life

This is why airplanes can fly and why rockets reach space.

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Stretch Challenge

Try this in real life this week.

This week, find one thing in your house that turns one kind of energy into another.

👨‍👩‍👧

For the dinner table

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

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Ready?