Lesson 11 of 15 · Forces

Lesson⭐ 30 XP⚡ Spark Lab

Rubbing Slows Things

🧪Lab Brief #11

Rubbing Slows Things.

🎯 Your mission

Master the concept. Use it tomorrow.

⚡ The twist

The opposite of what you expect is often what happens.

🤯

Mind = Blown

🔥 A bolt of lightning is 5 times hotter than the surface of the sun.

🔮

Make a hypothesis first

Predict: what happens if you double the force?

What You'll Learn

Things slow down and stop because the ground rubs against them. That is friction!

Key Words

Tap a word to see its definition.

Steps

Step 1 — Read

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

Step 2 — Do

Use a magnet to find things in the room that stick to it.

Step 3 — Observe

Look closely! What do you see?

Step 4 — Record

Draw a picture of what you learned today.

Check Your Understanding

Question 1

1 of 3

What happens if you push harder?

How sure are you going to be?😐 maybe

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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?