Friction Makes Heat

Lab Brief #24

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

The opposite of what you expect is often what happens.

What you'll learn

When two surfaces rub together, friction produces heat. Rub your hands together to feel it!

Key words

Make a hypothesis first

Predict: what happens if you double the force?

Say your guess out loud — then find out if you were right.

Step 1 of 3 · Read

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

Step 2 of 3 · Observe

Draw a picture of what you observe.

Step 3 of 3 · Record

Share your results with a partner.

Question 1 of 3

What does friction do?

How sure are you?😐 maybe

Question 2 of 3

What kind of surface has the most friction?

How sure are you?😐 maybe

Question 3 of 3

What force keeps you on the ground?

How sure are you?😐 maybe

Mind = blown

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

Nice work!

You got 0 of 3 right.

🎯

We'll pick an experiment that matches exactly how you're thinking right now.

✨ More to explore

🌍 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 it 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.”

Send it to a parent who's looking for a 10-minute kitchen science win.

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